Leap-year PET

Leap-year PET

Published on 18 December 2020

Do you know what is a leap year?

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Transcript
00:01
Do you know what a leap-year is?
00:18
46 b.C.
00:47
365 + 1
00:50
GREGORIAN CALENDAR
01:15
TROPICAL YEAR
01:32
5hr 48 min 45.1 sec x 4
01:42
365
01:46
365+5hr...