OBAFOGBrazilian Rocket Olympiad (formerly MOBFOG)
Rocket Days (16 groups; invited teams only) · Aug 3 – Dec 17, 2026
2026–2030 calendar
Competition calendar
Tech competitions highlighted (⚡), science olympiads, hackathons and more. Filter by age and click an event for details.
⚡ Upcoming tech dates
48h HackathonsMLH GHWOnline hackathon weekNov 6–12, 2026happening now</> ProgrammingBebrasWorld-Wide Bebras Week of computational thinkingNov 9–13, 2026happening now🔐 CybersecurityCSAWCSAW Cybersecurity Games Global FinalsNov 12–14, 2026in 2 days48h HackathonsJunctionHackathon (48 h)Nov 13–15, 2026in 3 days
Sun
Mon
Tue
Wed
Thu
Fri
Sat
29
30
2
3
14
15
16
17
22
23
25
26
27
28
29
30
31
1
2
Long registration periods appear only on the days they open and close.
This month's competitions
December 2026
26 dates
STEM OlympiadInternational STEM Olympiad
Project submission – STEM Maker Challenge · Oct 1 – Dec 21, 2026
TechnovationTechnovation Girls
Team registration · Oct 11 – Mar 11, 2027
Imagine CupMicrosoft Imagine Cup
Startup applications · Nov 2 – Feb 28, 2027
Advent of CyberTryHackMe Advent of Cyber
Daily security and hacking challenges (December 1 to 24) · Dec 1–24, 2026
MLH GHWMLH Global Hack Week: Open Source Week
Online hackathon week (open source) · Dec 4–10, 2026
WAICYWorld Artificial Intelligence Competition for Youth
World Artificial Intelligence Competition for Youth Global Finals · Dec 4–6, 2026
ONCNational Science Olympiad
National awards ceremony for medalists · Dec 5, 2026
STEAM AHEADSTEAM AHEAD – International Mega Finals
STEAM AHEAD Grand Gathering & Global Finals · Dec 5–9, 2026
OBIBrazilian Olympiad in Informatics
Olympic Week (invitees only) · Dec 6–12, 2026
CSEdWeekComputer Science Education Week (CSEdWeek) and Hour of AI
Hour of AI (formerly Hour of Code): free activities · Dec 7–13, 2026
OBMBrazilian Mathematical Olympiad
Score review requests · Dec 7–9, 2026
ONIANational Artificial Intelligence Olympiad
3rd ONIA – Phase 2, stage 2 · Dec 7–13, 2026
OBLBrazilian Linguistics Olympiad
Andrei Zalizniak Tournament – results · Dec 8, 2026
WROWorld Robot Olympiad (WRO) 2026
International final · Dec 8–10, 2026
OBFEPBrazilian Public School Physics Olympiad
Final results – 3rd and 4th years (announced by this date) · Dec 11, 2026
Hacker CupMeta Hacker Cup
Meta Hacker Cup World Finals · Dec 12, 2026
OBMBrazilian Mathematical Olympiad
Announcement of award winners · Dec 14, 2026
OBMEPBrazilian Public School Mathematics Olympiad
Announcement of award winners · Dec 15, 2026
FEBRACEBrazilian Science and Engineering Fair (FEBRACE)
FEBRACE 2027 finalists announced (2 p.m. Brasília time) · Dec 18, 2026
SWERCICPC Southwestern Europe Regional Contest (SWERC)
Regional contest · Dec 18–20, 2026
USACOUSA Computing Olympiad
December Contest (opening of the 2026–2027 season) · Dec 18–21, 2026
Coding OlympiadInternational Coding Olympiad
2nd Online Qualifying Round · Dec 19–21, 2026
This month, no set day · announcements and estimates
AoCAdvent of Code
Daily programming puzzles (from December 1 to mid-month) · December 2026 (days to be confirmed)
IJSOInternational Junior Science Olympiad
Competition · December 2026 (days to be confirmed)
OCI ChileChilean Olympiad in Informatics
National final · December 2026 (days to be confirmed)
Confirmed: official days · Month announced: days to be confirmed · Estimate: the month it is usually held, not announced yet · No forecast: date unknown.
Dates checked on the organizers' official websites and calendars (last review on November 6, 2026). They may change: always confirm on the official website before registering or traveling.