Polo
It varies. Arena polo has 4 7 minute periods called Chukkas
Chukkers (or chukkas) are the name of the periods of play in Polo.
The sport of ice hockey is played in three periods.
Polo is a game that consists of six 7 minute chukkas.
A game of Polo can, depending on the level being played at, consist of four 6 minute chukkas or up to eight 7 minute chukkas.
A regular game of polo consists of four chukkas, or "periods," of seven minutes each. Ideally a rider changes to a fresh horse at the end of each chukka, which is why he or she would need four horses. An official FIP game consists of six chukkas, meaning a player might want a total of six horses or more. Some higher goal games are eight chukkas long.
Chukka (sing.), Chukkas (plural)
A chukka or chukkar, any of the six playing periods in a polo game that lasts 7 1/2 minutes
rows. the vertical columns are called periods
periods, they are periods
The time periods are called quarters and there are four of them.
The columns are called groups and rows are called periods. There are 18 groups and 7 periods.