We measure time in many units: year, month, day, hour, minute, second. 1 year = 12 months. A month may have 28, 29, 30, or 31 days. 1 day = 24 hours. 1 hour = 60 minutes. 1 minute = 60 seconds. These relationships help you convert from one unit to another.
1 year = 12 months
1 day = 24 hours
1 hour = 60 minutes
1 minute = 60 seconds
Look at the calendar
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