60 seconds, sec. equal 1 minute, min.

60 minutes

equal

1 hour, hr.

24 hours

"

1 day, dy.

7 days

"

1 week, wk.

2 weeks

"

1 fortnight.

4 "

"

1 month, mo.

13 months 1 day 6 hr. equal 1 Julian year.

365 days 6 hours equal 1 Julian year.

366 days equal 1 leap year. 12 calendar months equal 1 year.

Used for computing time.