Isang taon ng kalendaryong Gregorian, ay may 365.2425 araw:
1 year = 365.2425 days = (365.2425 days) × (24 hours/day) × (3600 seconds/hour) = 31556952 seconds
Isang Julian astronomical na taon, ay may 365.25 araw:
1 year = 365.25 days = (365.25 days) × (24 hours/day) × (3600 seconds/hour) = 31557600 seconds
Ang isang kalendaryong karaniwang taon ay may 365 araw:
1 common year = 365 days = (365 days) × (24 hours/day) × (3600 seconds/hour) = 31536000 seconds
Ang isang leap year sa kalendaryo ay may 366 na araw (nagaganap bawat 4 na taon):
1 leap year = 366 days = (366 days) × (24 hours/day) × (3600 seconds/hour) = 31622400 seconds
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