A half hour is 30 min so there is two half hours in an hour
60 seconds an 1 minute 60 minutes in 1 hour 30 minutes in half an hour 90 minutes in one and a half hours. So 90 minutes * 60 seconds = 5400 seconds
3,600 seconds in one hour.
3600 seconds in one hour.
1 hour has 3,600 seconds.
There are only one group of 3600 seconds in one hour. One hour is equal to 3600 seconds.
One week = 1,209,600 half-seconds.
3,600 seconds.
One hour has 3,600 seconds.