All
Once
Speedscrambling
Time the scramble, not the solve. Don actually submit it, just make it a comment.
Competitions start immediately after creation.
One-Time competitions never end.
Daily competitions start and end at midnight of each day (GMT time).
Weekly competitions start at the beginning and end at the ending of each week at midnight (GMT time).
Monthly competitions start at the beginning and end at the ending of each month at midnight (GMT time).