How long are periods, intermissions, warm-ups and timeouts?

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Item USA Hockey rule Game length Maximum three 20-minute periods. Your league or event sets the actual length. Intermission 15 minutes, allowing for an ice resurface Pre-game warm-up Up to 20 minutes. Length, and whether to resurface before the game, is agreed by the teams or set by the proper authorities. Team timeout One 60-second timeout per team per game (regulation or overtime). None in time-curfew games. Warning before each period 3 minutes before play resumes It's recommended that intermission time be shown on the game clock. Overtime: if a winner is needed, USA Hockey recommends a 5-minute rest and then a 10-minute sudden-victory period, with at least three skaters plus a goalie a side. Penalties still running carry into overtime. Affiliates and local governing bodies may set their own overtime and shootout format.

Item	USA Hockey rule
Game length	Maximum three 20-minute periods. Your league or event sets the actual length.
Intermission	15 minutes, allowing for an ice resurface
Pre-game warm-up	Up to 20 minutes. Length, and whether to resurface before the game, is agreed by the teams or set by the proper authorities.
Team timeout	One 60-second timeout per team per game (regulation or overtime). None in time-curfew games.
Warning before each period	3 minutes before play resumes