Host a contest

This platform can run your programming contest: your problems, your contestants, your own organiser account. Pick a slot the calendar shows as free, tell us who you are, and we will write back to confirm.

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June 2025

Times are in UTC. Bars show how much of each day is booked; open a day to see which hours are taken and which are free.

Contest windows in June 2025, all times UTC.
Mon	Tue	Wed	Thu	Fri	Sat	Sun
26 26 May · UTC Nothing booked — free all day	27 27 May · UTC Nothing booked — free all day	28 28 May · UTC Nothing booked — free all day	29 29 May · UTC Nothing booked — free all day	30 30 May · UTC Nothing booked — free all day	31 31 May · UTC Nothing booked — free all day	1 1 June · UTC Nothing booked — free all day
2 2 June · UTC Nothing booked — free all day	3 3 June · UTC Nothing booked — free all day	4 4 June · UTC Nothing booked — free all day	5 5 June · UTC Nothing booked — free all day	6 6 June · UTC Nothing booked — free all day	7 7 June · UTC Nothing booked — free all day	8 8 June · UTC Nothing booked — free all day
9 9 June · UTC Nothing booked — free all day	10 10 June · UTC Nothing booked — free all day	11 11 June · UTC Nothing booked — free all day	12 12 June · UTC Nothing booked — free all day	13 13 June · UTC Nothing booked — free all day	14 14 June · UTC Nothing booked — free all day	15 15 June · UTC Nothing booked — free all day
16 16 June · UTC Nothing booked — free all day	17 17 June · UTC Nothing booked — free all day	18 18 June · UTC Nothing booked — free all day	19 19 June · UTC Nothing booked — free all day	20 20 June · UTC Nothing booked — free all day	21 21 June · UTC Nothing booked — free all day	22 22 June · UTC Nothing booked — free all day
23 23 June · UTC Nothing booked — free all day	24 24 June · UTC Nothing booked — free all day	25 25 June · UTC Nothing booked — free all day	26 26 June · UTC Nothing booked — free all day	27 27 June · UTC Nothing booked — free all day	28 28 June · UTC Nothing booked — free all day	29 29 June · UTC Nothing booked — free all day
30 30 June · UTC Nothing booked — free all day	1 1 July · UTC Nothing booked — free all day	2 2 July · UTC Nothing booked — free all day	3 3 July · UTC Nothing booked — free all day	4 4 July · UTC Nothing booked — free all day	5 5 July · UTC Nothing booked — free all day	6 6 July · UTC Nothing booked — free all day

Named windows are confirmed. requested means someone has asked for that day and we have not decided yet — you may still ask for it.

Ask for a slot

Your name

School or organisation

Phone (optional)

Contest name

Start

End

Time zone

Expected participants (optional)

The start and end are on the clock of the time zone you pick. A contest may run for at most 12 hours, and must start at least 24 hours from now.

Anything else (optional)

I agree that my name, organisation, email and phone number are stored so that this contest can be arranged, and that they are used for nothing else. They are visible only to the people running this platform, are never published, and can be deleted on request. The address this request is sent from is also recorded, to spot abuse of this form.

Nothing is booked until we confirm it. You will get a link to check the status of your request; keep it, because it is the only way back to it.