Top Boston Bat Mitzvah Venues

795 results near Boston, MA

Find a Venue

Choosing your bat mitzvah venue will be one of the most important steps in the planning process. So much goes into finding the perfect venue in Boston. You’ll want to consider everything from the aesthetics of the space to any in-house amenities and services. Luckily, PartySlate makes it easy with our Find Venues page. Use the filters to narrow your search — taking into account everything from your guest count to specific catering preferences. Once you’ve set your filters, scroll down to search our curated list. Look for the “featured” tag for PartySlate’s top recommendations. With PartySlate, finding your ideal Boston venue has never been easier.

Results

  • featured

    Courageous Sailing

    1 1st Ave, Boston, MA 02129, USA
    • Spaces for 250-800 Guests
    • 1 Outdoor
    • 1 Event Space
    • 1 space at this venue

    Pier 4 offers much more than sailing, we now have an amazing event space where everyone, whether sailors or non-sailors, can bring their dream event to life! With breathtaking views and endless possibilities, this is the perfect setting to make your vision a reality. Whether you're a seasoned sailor or someone who just loves the beauty of the water, our stunning location offers the perfect backdrop for any occasion. A breathtaking, picturesque, waterfront setting that serves as the ultimate blank canvas, ready to be transformed into the wedding, fundraiser, or corporate event of your dreams. This space offers endless possibilities, allowing you to craft a celebration that’s not only everything you’ve envisioned, but even more extraordinary than you imagined.

    Avg response time 12-24 hrs
  • featured
    Featured photo from Alibi Bar and Lounge

    Alibi Bar and Lounge

    215 Charles St, Boston, MA 02114, USA
    • Spaces for 145-345 Guests
    • 2 Restaurants

    Tucked within Boston’s Liberty Hotel, Alibi Bar and Lounge offers a stylish, nightlife-inspired setting for private events, cocktail receptions, and social gatherings. The venue blends historic architectural details with contemporary design, featuring dramatic lighting, plush seating, and an energetic lounge atmosphere. Flexible indoor spaces accommodate both intimate groups and larger celebrations, while craft cocktails and elevated bites create a polished yet lively event experience in the heart of Beacon Hill.

    Est. $60/guest
    Avg response time 12-24 hrs
  • featured
    Featured photo from Fairmont Copley Plaza

    Fairmont Copley Plaza

    138 St James Ave, Boston, MA 02116, USA
    • Spaces for 40-1,100 Guests
    • 13 Hotels
    • 5 Ballrooms
    • 13 Total Spaces

    Since its opening in 1912, the luxury "Grand Dame of Boston" has charmed guests for over a century. Centrally located in the heart of Boston's famed Back Bay neighborhood, Fairmont Copley Plaza connects guests to the quintessential Boston experience – steps away are many of the city's finest sights and activities such as the Boston Public Library, Beacon Hill, the historic Freedom Trail, shops on Newbury Street and Copley Place Mall. Steeped in history, Fairmont Copley Plaza has been the destination for glamorous galas, fundraisers, personal soirees, corporate gatherings, and weddings for over a century. Our professional event specialists and extraordinary culinary team will “wow” your guests with customized details and creative cuisine. Since its opening, our hotel remains a timeless haven in which the cares of the world retreat, and luxury and gracious service are a way of life.

    Est. $450/guest
    Avg response time 12-24 hrs
  • featured
    Featured photo from Game On Fenway

    Game On Fenway

    82 Lansdowne St, Boston, MA 02215, USA
    • Spaces for 65-700 Guests
    • 1 Restaurant
    • 1 Event Space

    Located steps from Fenway Park, Game On Fenway offers a high-energy, sports-driven setting for meetings, private events, and social gatherings. The venue features multiple flexible spaces, including a large main bar, private event areas, and a rooftop with views overlooking the ballpark. With expansive TVs, lively interiors, and adaptable layouts, the space accommodates everything from casual parties to large-scale events. Paired with elevated bar fare and a vibrant atmosphere, it delivers a dynamic event experience in one of Boston’s most iconic locations.

    Pricing Details Available
    Avg response time 6-12 hrs
  • featured
    Featured photo from 9OFS

    9OFS

    1 Federal St, Boston, MA 02110, USA
    • Spaces for 12-200 Guests
    • 1 Outdoor
    • 1 Rooftop
    • 4 Total Spaces

    9OFS, located on the edge of the Boston Financial District, offers an unmatched indoor and outdoor experience with panoramic city views. Its serene setting contrasts sharply with the bustling bustle of the city below, making it an ideal setting for special gatherings of all kinds. Additionally, in addition to the amazing environment provided by the venue, it is surrounded by exciting sights for you and your guests to enjoy, such as the Boston Waterfront and the Faneuil Hall Marketplace. In order to make your event one to remember, 9OFS is a fantastic choice! The possibilities at 9OFS are virtually infinite, thanks to its adaptable floor plans and magnificent views. Located on the ninth level of One Federal Street, the facility hosts a variety of events. The interior is contemporary and streamlined, while the outside reflects the glitz and glam of the city's bustling activity. PRIVATE EVENTS: ELEGANT & INTIMATE PRIVATE EVENTS To complement the rich open air gardens, a dazzling reflecting pool provides a unique perspective on the Boston skyline for private gatherings. This lofty backdrop for any special occasion is matched with a smart and contemporary internal environment, which serves as a sophisticated and contemporary counterpoint to the rooftop. MEETINGS: TAILORED & TASTEFUL MEETING ROOMS 9OFS, located nine stories above Boston's Financial District, is a well designed meeting space that is well suited for any type of event or conference. A polished environment surrounded by dynamic cityscape views is provided by the location, which can be adapted to accommodate any size event.

  • featured
    Featured photo from Four Seasons Hotel One Dalton Street, Boston

    Four Seasons Hotel One Dalton Street, Boston

    1 Dalton St, Boston, MA 02115, USA
    • Spaces for 120-250 Guests
    • 2 Hotels
    • 2 Ballrooms

    Four Seasons Hotel One Dalton Street, Boston is a cutting edge sixty one story sky scraper in the center of Back Bay that is bright, sophisticated, and fashionable. Stay with us to discover a new level of urban sophistication, complete with a gorgeous Wellness Floor and Zuma, the world's most famous Japanese Izakaya inspired restaurant. The unique, modern architecture of Four Seasons Hotel One Dalton Street, Boston, will enhance your meetings and gatherings. There are two ballrooms and five function rooms to choose from, all with plenty of natural light and floor to ceiling windows. Built in audio visual equipment and marble buffets are available in the event spaces, which include two rooms with outdoor terraces, which are unusual in Boston. Our team will collaborate closely with you to design a custom itinerary that meets and exceeds your expectations. EVENTS Whether you're arranging a small family event or a major charity gala, the Four Seasons Hotel One Dalton Street in Boston is the place to be. Entertain in our naturally light ballrooms or on a secluded outdoor patio in the heart of Back Bay. We'll serve a unique food complemented by attentive, individualized service. MEETINGS Bring everyone together in our naturally light ballrooms or on a private outdoor terrace for a memorable Boston gathering. Our Conference Services team will handle all the details, whether it's for a board meeting or a worldwide sales convention. For an unmistakably Boston experience, expect inventive local cuisine, creative breaks, and excellent Four Seasons service.

    Avg response time 12-24 hrs
  • featured
    Featured photo from Royale

    Royale

    279 Tremont St, Boston, MA 02116, USA
    • Spaces for 700-1,400 Guests
    • 1 Event Space

    Royale Boston is a premier event venue located in the historic theater district of Boston, Massachusetts. The club boasts a rich history, having originally opened its doors in 1918 as the an Opera House. Over the years, it has undergone several transformations and renovations, eventually becoming Royale Boston in 2010. Today, Royale Boston is a popular destination for locals and tourists alike, drawing crowds from across the city and beyond. The venue offers a unique and exciting atmosphere, featuring a spacious dance floor, state-of-the-art sound system, and stunning lighting displays. With a capacity of close to 2,000 people, Royale Boston is the perfect place to see your favorite artists perform, dance the night away with friends, or celebrate a special occasion. One of the defining features of Royale Boston is its historic architecture. The building was originally designed in the Beaux-Arts style, a popular architectural style in the late 19th and early 20th centuries that emphasized classical design elements such as symmetry, balance, and grandeur. The venue's ornate facade, intricate detailing, and towering columns all reflect this aesthetic, giving it a sense of timeless elegance and sophistication. Inside, Royale Boston is just as impressive. The club's main room features a massive dance floor, surrounded by multiple levels of balconies and VIP seating areas. The stage is situated at the far end of the room, with a towering LED screen behind it that showcases stunning visuals and animations throughout the night. The sound system is top-of-the-line, with a custom-designed array of speakers and subwoofers that deliver crystal-clear sound and deep, powerful bass. Royale Boston hosts a wide range of events throughout the year, from live music performances to dance parties, comedy shows, and more. The venue has become particularly well-known for its EDM and electronic music events, which often feature some of the biggest names in the industry. In addition to its regular events, Royale Boston also offers private event rentals for corporate events, weddings, and other special occasions. Overall, Royale Boston is a one-of-a-kind event venue that truly captures the essence of Boston's historic theater district. Whether you're a fan of live music, EDM, or just looking for a night out with friends, Royale Boston has something to offer for everyone. With its stunning architecture, state-of-the-art sound and lighting systems, and commitment to inclusivity and hospitality, Royale Boston is a true gem of the city's nightlife scene.

    Pricing Details Available
    Avg response time 12-24 hrs
  • featured
    Featured photo from MGM Music Hall at Fenway

    MGM Music Hall at Fenway

    2 Lansdowne St, Boston, MA 02215, USA
    • Spaces for 50-5,000 Guests
    • 1 Outdoor
    • 1 Theater
    • 4 Total Spaces

    MGM Music Hall at Fenway is a premier entertainment destination in Boston, offering a dynamic event setting steps from the iconic Fenway Park. Featuring a state-of-the-art venue with advanced sound and lighting technology, versatile layouts, full-service production capabilities, and exceptional hospitality, it creates an elevated experience for memorable gatherings. With its modern design, iconic location, and access to world-class entertainment, MGM Music Hall at Fenway provides a distinctive backdrop for extraordinary events.

    $7,500 min
    Pricing Details Available
    Avg response time 1-2 days
  • featured
    Featured photo from Museum of Science, Boston

    Museum of Science, Boston

    Museum Of Science Driveway, Boston, MA 02114, USA
    • Spaces for 30-5,000 Guests
    • 1 Ballroom
    • 7 Museums
    • 7 Total Spaces

    Set along the Charles River, the Museum of Science, Boston offers a dynamic alternative to traditional event venues. Surrounded by iconic exhibits, live demonstrations, and sweeping riverfront views, the Museum creates an engaging and unexpected backdrop for celebrations of every kind. With versatile indoor and outdoor spaces, expert event coordination, in-house catering by MAX Ultimate Food, and robust audiovisual capabilities, every detail is thoughtfully handled so hosts and guests can focus on the experience. Opening October 2026, the Museum will debut the Public Science Common, a new immersive, technology-forward venue designed for high-impact events. With capacity for 400 guests seated or 700 standing, the Public Science Common will feature advanced audiovisual integration and flexible staging, redefining what’s possible for large-scale celebrations. At the Museum of Science, Boston, science, innovation, and celebration come together to create events your guests won’t forget.

    Pricing Details Available
    Avg response time 12-24 hrs
  • featured
    Featured photo from Fenway Park

    Fenway Park

    4 Jersey St, Boston, MA 02215, USA
    • Spaces for 40-30,000 Guests
    • 5 Bars
    • 1 Museum
    • 15 Total Spaces

    Evergreen is the event group behind some of Boston’s most memorable gatherings and celebrations at Fenway Park and beyond. Rooted in over a century of history at one of America’s most iconic ballparks, it offers an array of unique spaces tailored to everything from social events and corporate functions to weddings and large-scale celebrations. With flexible indoor and outdoor venue options that showcase stadium views and historic character, Evergreen combines expert event planning with unforgettable settings. Their dedicated team brings decades of experience to each occasion, helping couples and hosts create moments that live on long after the day itself.

    Pricing Details Available
    Avg response time 12-24 hrs
  • featured
    Featured photo from View Boston Observation Deck

    View Boston Observation Deck

    800 Boylston St, Boston, MA 02199, USA
    • Spaces for 30-1,300 Guests
    • 2 Restaurants
    • 3 Event Spaces

    Perched atop one of Boston’s tallest skyscrapers, View Boston Observation Deck offers a dramatic skyline setting for private events, receptions, and social gatherings. The venue features panoramic indoor and outdoor viewing areas with sweeping views of the city, harbor, and surrounding neighborhoods. Modern interiors, floor-to-ceiling windows, and immersive interactive experiences create a contemporary backdrop for both intimate celebrations and large-scale events, delivering a memorable experience high above the heart of Back Bay.

    Avg response time 6-12 hrs
  • featured
    Featured photo from The Colonnade Hotel Boston

    The Colonnade Hotel Boston

    120 Huntington Ave, Boston, MA 02116, USA
    • Spaces for 90-750 Guests
    • 5 Hotels
    • 2 Ballrooms
    • 5 Total Spaces

    Centrally located and exquisitely appointed in the iconic Back Bay neighborhood, The Colonnade Hotel in Boston MA is the contemporary luxury Boston hotel of choice for the modern traveler. Nestled at the intersection of a quaint residential community and Boston’s main shopping districts in Copley Square and Newbury Street, our Back Bay address offers prime access to the Boston Symphony, Hynes Convention Center, Northeastern University and nearby transit, allowing you to get out and explore the best of Boston. The Colonnade Hotel in Boston, a Boston Copley Square hotel, wants to offer a heightened experience to each of our guests, whether you're traveling for business or pleasure, or perhaps looking for hotels with pools in Boston, upon arrival, be greeted by a variety of luxurious amenities you’re unlikely to find at other hotels in Boston. This includes our fully-equipped fitness center, and our renowned rooftop pool, known as RTP, which offers an idyllic escape from the city alongside sweeping views of the Boston skyline. After days and nights exploring major Boston attractions near The Colonnade, enjoy a peaceful retreat to one of our modern and spacious guestrooms where you’ll discover an abundance of Back Bay Boston hotel's natural sunlight and unobstructed views of the Prudential Center and Back Bay. Enjoy Boston lodging and an indulgent night’s rest atop a plush pillow-top mattress and when you awake be sure to enjoy a variety of other in-room comforts including a 55-inch flat-screen LCD TV, Keurig coffee brewers, dimmable lighting, an abundance of outlets and complimentary ULTRA High-Speed Frida wired & wireless Internet access to help you stay connected while you’re away from home. Experience a new kind of hotel in Boston MA, imbued with New England hospitality, East Coast charm, and accessible luxury. Only at The Colonnade.

    Est. $240/guest
    Pricing Details Available
    Avg response time 12-24 hrs
  • featured
    Featured photo from Omni Boston Hotel at the Seaport

    Omni Boston Hotel at the Seaport

    450 Summer St, Boston, MA 02210, USA
    • Spaces for 25-3,000 Guests
    • 4 Restaurants
    • 1 Bar
    • 8 Total Spaces

    In a prime location in Boston's exciting Seaport neighborhood - across the Street from the Boston Convention and Exhibition Center and just a few miles from Logan Airport, Omni Boston Hotel at the Seaport is the perfect place for your next meeting or corporate event. The hotel features 100,000 square feet of indoor/outdoor meeting, event, and pre-function space, including the largest single hotel ballroom in Boston. A world-class culinary team can create a delicious menu of local fare, while our meeting professionals can help with your audio/visual, security and design needs. Whether you’re hosting a meeting for a group of 20 or 2,500, Omni has the Boston meeting space you need. Omni Boston Hotel at the Seaport interiors are built on a foundation of culture and with a view to the future. Taking inspiration from Boston’s timeless cultural institutions, the hotel’s essence is accessible to everyone, welcoming guests to experience art history or current innovations. Located in the ever-evolving Seaport neighborhood, the hotel’s offerings will be unmatched only by its striking waterfront views of Boston Harbor. The Omni Boston Hotel at the Seaport boasts 1,054 finely appointed guestrooms spanning 22 stories, with 52 suites and distinguished local design influences from the nautical Seaport District to Boston’s rich musical complexion. Our innovative guestrooms feature contemporary layouts of sophisticated warmth and simplicity, embracing guests as they enjoy sweeping views of Boston Harbor and the greater Seaport District.

    Est. $214/guest
    Pricing Details Available
    Avg response time 1-2 days
  • featured
    Featured photo from Renaissance Boston Seaport District

    Renaissance Boston Seaport District

    Renaissance Boston Waterfront Hotel, 606 Congress St, Boston, MA 02210, USA
    • Spaces for 50-1,000 Guests
    • 3 Hotels
    • 3 Ballrooms

    Step into the Seaport and uncover a bolder side of Boston. Nestled in the city’s newest neighborhood, the Renaissance Boston Seaport District invites you to indulge in more. From stylish spaces to charming accommodations, our dedicated team ensures your event is truly one-of-a-kind. Providing the ultimate setting for grand galas, elegant weddings, corporate celebrations, charity fundraisers, social gatherings, and more. From elaborate gatherings to intimate celebrations, the customizable venue space, Audio Visual, and artfully crafted catering at the Renaissance Boston Seaport District will bring your vision to life. The Atlantic Junior Ballroom, with floor-to-ceiling windows and stunning Seaport views, accommodates 300 guests banquet-style. While the Pacific Grand Ballroom can host up to 720 guests. Retreat to newly renovated nautically inspired guest rooms and suites, featuring waterfront and Boston Seaport views. Capiz Lounge, the on-site bar and restaurant, offers craft cocktails and indulgent bites or order late-night bites delivered conveniently to your guest room with A La Carte in-room dining. Refresh with a swim in the indoor lap pool, unwind in the sauna, or recharge in the well-equipped fitness center. Before venturing out, grab coffee and a pastry at the Starbucks® in the hotel’s lobby. Boston’s bustling harbor and the lively Seaport District is meant for exploration. Visit the Navigator desk in the lobby to be in the know of the latest pop-up shops, breweries, dining, live music, and art exhibitions in the neighborhood. Experience Boston’s unique water taxi service to and from Logan International Airport and other harbor destinations, with pick-up at Liberty Wharf. Taxis, ride-sharing apps, and the MBTA Silver Line, which connects to Logan Airport and South Station within minutes is also readily available. Make your next event unforgettable at the Renaissance Boston Seaport District, where every detail is crafted for you, uniquely and authentically.

    Avg response time 12-24 hrs
  • featured
    Featured photo from F1 Arcade Boston

    F1 Arcade Boston

    87 Pier 4 Blvd., Boston, MA 02210, USA
    • Spaces for 40-400 Guests
    • 2 Restaurants
    • 2 Bars
    • 2 Total Spaces

    F1 Arcade Boston offers an immersive, high-octane social gaming experience, perfect for corporate events, holiday parties, and networking gatherings. Located in Seaport, it features 400 guest capacity, 69 racing simulators, a private bar, and customizable audio-visual settings. With semi-private and private spaces, it accommodates a variety of group sizes. Guests enjoy racing simulators alongside top-tier dining and drinks in a unique, vibrant atmosphere. Ideal for those seeking a blend of entertainment and hospitality. Whether you’re an old or new Formula 1® fan, you’ll love this immersive arcade bar in Boston. Assemble your pit crew, grab a cocktail, and take the wheel of our racing simulators for an electrifying experience you’ll never forget. Start your engines - it’s lights out and away we go!

    Pricing Details Available
  • featured
    Featured photo from Sheraton Boston Hotel

    Sheraton Boston Hotel

    39 Dalton St, Boston, MA 02199, USA
    • Spaces for 4-1,900 Guests
    • 1 Restaurant
    • 4 Ballrooms
    • 1 Event Space

    Welcome to Boston’s Most Exceptional Gathering Place. For over 60 years, Sheraton Boston Hotel has brought people together in Back Bay. Now fully reimagined, the hotel introduces a new era of gathering with beautifully renovated event spaces designed for connection and ease. From expansive grand ballrooms to light-filled venues like the Constitution Ballroom, each space offers a refined backdrop for everything from elegant galas to celebratory receptions. With direct access to the Hynes Convention Center, every event flows seamlessly from one space to the next. At Henderson, private dining offers a collection of thoughtfully designed spaces for more intimate gatherings. From small dinners to full restaurant buyouts for up to 300 guests, each experience is complemented by seasonal menus and attentive, seamless service—creating a warm, inviting setting to gather and celebrate. For smaller meetings and flexible work sessions, Sheraton Boston features three bookable studios in the lobby, ideal for quick client meetings, team huddles, or solo productivity. These fresh, semi-private spaces offer modern amenities and convenient hourly booking. For a more private and elevated setting, bookable Studio Suites provide a comfortable environment for small meetings and collaborative sessions, thoughtfully designed to support focus and connection. From large-scale celebrations to intimate moments, every space is designed to bring people together with ease and intention.

    Est. $125/guest
    Pricing Details Available
  • featured
    Featured photo from Leader Bank Pavilion

    Leader Bank Pavilion

    290 Northern Ave, Boston, MA 02210, USA
    • Spaces for 100-5,000 Guests
    • 1 Outdoor
    • 4 Event Spaces
    • 4 Total Spaces

    Located along Boston’s waterfront in the Seaport District, Leader Bank Pavilion offers a dynamic open-air setting for concerts, corporate events, and private gatherings. The venue features covered amphitheater seating, expansive harbor views, and flexible event spaces designed to accommodate everything from intimate receptions to large-scale productions. Modern amenities, state-of-the-art sound and lighting systems, and a lively waterfront atmosphere create a memorable backdrop for entertainment-driven events in one of Boston’s most vibrant neighborhoods.

    $6,000 min
    Avg response time 1-2 days
  • featured
    Featured photo from Aloft Boston Seaport District

    Aloft Boston Seaport District

    401 D St, Boston, MA 02210, USA
    • Spaces for 40-600 Guests
    • 1 Bar
    • 8 Hotels
    • 8 Total Spaces

    With 9,000 square feet of upbeat & vibrant event space, Aloft Boston Seaport District is the perfect backdrop for your vibe. Celebrate with friends or innovate with colleagues in spaces meant to inspire. Step out for more entertainment in the booming Seaport District, near Boston's best attractions, breweries, and restaurants. Or continue the celebration in our onsite WXYZ Bar or at D's Keys Dueling Piano Bar right next door.

    Est. $100/guest
    Pricing Details Available
    Avg response time 12-24 hrs
  • featured
    Featured photo from Boston Marriott Long Wharf

    Boston Marriott Long Wharf

    296 State St, Boston, MA 02109, USA
    • Spaces for 150-800 Guests
    • 3 Hotels
    • 3 Ballrooms
    • 5 Total Spaces

    Embark on a journey of love at Boston Marriott Long Wharf, where the serene waters and graceful sailboats set the scene for your special day. Situated on Boston’s most iconic wharf, our hotel’s event venues offer a timeless and captivating setting for waterfront weddings. Whether you envision an intimate gathering or a grand celebration, we are here to bring your dream wedding to life with heartfelt hospitality and imaginative touches. With 20,000 square feet of flexible harborside event space, Boston Marriott Long Wharf provides a variety of captivating venues to suit your wedding needs. The Grand Ballroom, accommodating up to 480 guests, features an original design with a hand-crafted ceiling reminiscent of a ship’s hull. The Harbor View Ballroom, with floor-to-ceiling windows and panoramic views, can host up to 146 guests for a seated dinner or 200 guests for a reception, and includes a connected outdoor Harbor View Terrace overlooking Boston’s Harbor. For a grand yet intimate atmosphere, the Palm Garden is ideal for ceremonies of up to 200 guests. Our premium guest suites offer impeccable accommodations for you and your guests to enjoy while we handle all the details. Savor dock-to-table cuisine with our customizable, handcrafted banquet and event menus featuring sustainable, local options. Located in the heart of Boston’s best attractions, every wedding here becomes a destination. Guests can enrich their stay with nearby attractions, including the family-friendly New England Aquarium, Faneuil Hall, and the picturesque Boston Harbor Islands. Conveniently accessible to Logan International Airport by water taxi, you can rest assured that every moment of your wedding will be cherished. Serene waters. Spectacular views. Remarkable weddings happen on the harbor.

    Avg response time 1-2 days
  • featured
    Featured photo from Eastern Standard Hospitality

    Eastern Standard Hospitality

    775 Beacon St, Boston, MA 02215, USA
    • Spaces for 26-300 Guests
    • 5 Restaurants
    • 5 Bars
    • 6 Total Spaces

    ES Hospitality offers a sophisticated collection of Boston event spaces, each designed to host memorable celebrations with exceptional style and hospitality. Their three distinct concepts, Standard Italian, Eastern Standard, and Equal Measure, feature inviting atmospheres and versatile layouts, ideal for gatherings ranging from intimate dinners to lively receptions.

    Est. $85/guest
    Avg response time 12-24 hrs