[time-nuts] Leap Quirks

[Poul-Henning Kamp]

In message <4960027E.1000103 at erols.com>, Chuck Harris writes:
>Poul-Henning Kamp wrote:

>>> Ok, that is news to me.  Are you saying that (pulling a number out of
>>> the air) time_t = 21120123 could be followed by 21120123 on a year where
>>> we added a leap second?
>> 
>> Apart from the number, that is exactly what happens: The last
>> second of the (UTC) day is recycled twice.
>
>[...] and all of the sources I have found
>concur that time_t is the number of seconds since 1/1/1970 UTC without
>regard to leap seconds.
>
>When did this change?

Never, that's the trouble.

time_t is better defined as:

	d * 86400 + min(rs, 86399)

where:
	d = Number of complete days since 1970-01-01H00:00:00Z 
	rs = number of seconds since UTC midnight.

Eliminating leapseconds would make it correct however.

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