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Meetings & Events

WG21 meets three times a year for week-long, face-to-face plenary sessions. All subgroups convene simultaneously, making each meeting the primary venue for advancing proposals toward the standard.

Who can attend?

Everyone is welcome to attend official WG21 meetings — you can join as a guest or as an official member. Guests are able to take part in everything except the final plenary approval votes held three times a year.

If attending as a guest, email the WG21 Convener ahead of time with your name and the country where you live or work — this helps WG21 comply with ISO requirements. For in-person meetings, it also helps them plan for seating, refreshments, and badges. Please try to give at least one week’s notice.

After your first meeting, you can continue participating by joining your country’s national body or through sponsorship by a current member.

Not sure where to start? Find more information on the official WG21 page.

Next meeting

WG21 Búzios

Location
Búzios, Brazil
Venue
Hotel Atlantico
Estrada da Usina, 294
Morro do Humaitá
Rio de Janeiro
Date
2026-11-16 2026-11-21
Status
Confirmed
View details
Upcoming

WG21 Istanbul

Location
Istanbul, Turkey
Venue
TBD
Date
2027-03-15 2027-03-20
Status
Confirmed
View details
Sofia Bulgaria · Summer 2027
Budapest Hungary · Autumn 2027
Kona HI, USA · Winter 2028
Madrid Spain · Summer 2028
Crete Greece · Autumn 2028
Under discussion Winter 2029

* tentative locations subject to change · confirmed via national body vote prior to each meeting

IDMeetingDateMinutes
N5040 WG21 Croydon Croydon, London, UK 2026-03-23 Minutes
N5031 WG21 Kona Kona, HI, USA 2025-11-03 Minutes
N5016 WG21 Sofia Sofia, Bulgaria 2025-06-16 Minutes
N5007 WG21 Hagenberg Hagenberg, Austria 2025-02-10 Minutes