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A comment on How to Periodize History: 2020 and the Decade Dilemma.

Re:How to Periodize History: 2020 and the Decade Dilemma by bookmarkable on Saturday July 11, 2020 @02:14PM (#23804304)
Your first birthday is also the day you were born, so your 21st birthday is really the day you turn 20.
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Re:How to Periodize History: 2020 and the Decade Dilemma by mlok on Saturday July 11, 2020 @03:01PM (#23804764)
If you're born at 11pm then it is your birthnight :)

(In French we don't say birthday but "anniversaire" so the day you are born cannot be counted in. You have only one birth day.)

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Re:How to Periodize History: 2020 and the Decade Dilemma by qubex on Saturday July 11, 2020 @02:47PM (#23804626)
Your 21st birthday is the day Earth is back in the angular position it was in when the event originally occurred for the twentieth time.
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