[LEAPSECS] thread on slashdot

David Malone dwmalone at maths.tcd.ie
Tue Nov 20 14:04:20 EST 2007

> According to the timezone Theory file, Feb 30th has happened once before

> in Sweden:

> (A previous posting of this story was challenged, and Swedish

> readers produced the following references to support it:

> "Tiderakning och historia" by Natanael Beckman (1924) and

> "Tid, en bok om tiderakning och kalendervasen" by Lars-Olof

> Lode'n (no date was given).)

This story is listed in the Oxford Companion for the year under 30
February. They also point out that the Soviet Union used a calendar
where all months had 30 days, and there were 5 holiday days from 1
October 1929, so in 1930 and 1931 the Soviet Union effectively had
a 30 February.

(In the same entry they also point out that there seems to be no
truth to the modern assertion that the Romans gave all odd months
31 days, 29 to February and 30 to the rest.)


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