timestamps in sasl

Lennart Öhman <>
Tue Aug 26 09:38:09 CEST 2003


Hi,

For leapseconds see:
http://www.bldrdoc.gov/timefreq/pubs/bulletin/leapsecond.htm

For those fluent in Swedish, Statensprovningsanstalt is now
responsible for the time keeping in Sweden.
http://www.sp.se/metrology/timefreq/sv/tidhallning.htm

/Lennart

Per Bergqvist wrote:

> -------------------
> 
>>Con:	potential for human error; people looking at the timestamps
> 
> will be
> 
>>	surprised by what they see.
> 
> The utc_log flag should still be used. 
> 
> 
>>Con:	I've been told that Windows doesn't actually _know_ what the
> 
> UTC time
> 
>>	is; was that true and if so is it still true?
> 
> 
> This is not true.
> From the platform SDK "The system bases system time on coordinated
> universal time (UTC). UTC-based time is loosely defined as the current
> date and time of day in Greenwich, England."
> " Windows NT: Requires version 3.1 or later.
>   Windows: Requires Windows 95 or later.
>   Windows CE: Requires version 1.0 or later.
>   Header: Declared in winbase.h.
>   Import Library: Use kernel32.lib."
> 
> 
>>Con:	UNIX doesn't actually know what the UTC time is either; UNIX
> 
> firmly
> 
>>	believes that every day has exactly 86,400 seconds and in UTC that
>>	just isn't true.  Up to two days in a year may have an extra
> 
> second,
> 
>>	and there is no formula saying which years get leap seconds.  I
> 
> used
> 
>>	to have a table giving historic leap seconds, but it is way out of
>>	date and I don't remember where to get current information.
>>
> 
> This is true, OS people are planning/working on a move towards TAI 
> (International Atomic Time) nowadays.
> Use of NTP corrects leap seconds, but the final solution would be to
> use TAI. Until TAI support is more spread in OS'es I'll guess we will
> have to set for UTC. 
> 
> 
> /Per
> =========================================================
> Per Bergqvist
> Synapse Systems AB
> Phone: +46 709 686 685
> Email: 

-- 
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