20 mins.
Generally it is three 15 minute periods with a 1-2 minute intermission between
the intermission was about 15 minutes long
After the first period of play (20 minutes) is concluded.
In professional hockey, each period lasts for 20 minutes of gameplay, with a 15-minute intermission between each period.
Long plays and movies often have an intermission for the comfort of viewers.
It's like an hour and a half including intermission For the versions I was in, it was about an hour with no intermission.
20 minutes
This is slowing being phased out at the Bell Center in Montreal. Chances are that by the next hockey season, smoking during hockey intermissions will be a thing of the past.
There's still only one intermission between the second and third periods... What you're probably asking, though, is whether games were, at one time, played in two halves with one intermission, rather than in three periods with two intermissions. And yes, that was the case from the 1870s onward, until the three-period, two-intermission format was introduced for the 1910-11 season in the NHA (National Hockey Association), the forerunner of the NHL.
Yes, the musical was about 3 hours long with a 20 minute intermission when I saw it.
Only 15 minutes
When I was in it was about 50 minutes with no intermission.