12
60 ONE_MINUTE
300 ONE_HOUR
600 TWO_HOURS
900 THREE_HOURS
1200 FOUR_HOURS
1500 FIVE_HOURS
1800 SIX_HOURS
3600 TWELVE_HOURS
7200 ONE_DAY
14400 TWO_DAYS
21600 THREE_DAYS
72000 TEN_DAYS