1

for fifteen minutes

2

for thirty minutes

3

for forty-five minutes

4

for an hour

5

for two hours

6

for three hours

7

for four hours

8

for eight hours

9

for twelve hours

10

from sunrise to sunset

11

from sunset to sunrise

12

for a full day

13

until a set score or objective is reached

14

until only the victor is standing

15

until after the last competitor or team competes

16

until the last spectator leaves

17

until the playing field is unusable

18

until a noble wills it

19

until a deity wills it

20

indefinitely