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