There are four contests during the regular season. The window during which each contest can be accessed on HackerRank is as follows.
Contest #1: available Oct. 31, 2022; closes Sunday January 15, 2023 @ 11:59pm EST
Contest #2: available Dec. 26, 2022; closes Sunday March 5, 2023 @ 11:59pm EST
Contest #3: available Jan. 30, 2023; closes Sunday April 9, 2023 @ 11:59pm EDT
Contest #4: available March 6, 2023; closes Sunday May 14, 2023 @ 11:59pm EDT
Based on the scores during the regular season, top students in all divisions will be invited to participate in an online Finals competition:
Invitations E-mailed: May 1, 2023 through May 16, 2023
Invitational Finals: Saturday, May 27, 2023 (Memorial Day weekend in the United States)
There is a $25 per-student registration fee to participate in the Finals.
More details are available in the Finals page.