On Mon, 5 Nov 2018 14:32:58 -0800, Tom Brennan wrote:

>I always thought Spring Forward and Fall Back were not the greatest way
>to remember which way to move the clock.  I mean, I could just as easily
>trip and Fall Forward, or Spring Back if I get scared.
> 
Like many mnemonics this relies more on rote linguistic memory than
on any logical imperative.

>Now wasn't there a change to daylight savings time some years ago that
>moved things to a totally different week or month?  In that case, can I
>assume you still made no changes to STP and (I'll guess) it picked up
>the new dates from a remote NTP server or similar?
> 
2007: https://en.wikipedia.org/wiki/Daylight_saving_time#Procedure

There are national variants.  Australia and Chile are very different from USA.

I believe NTP transmits UTC.  To accommodate legislative changes one
must use further resources such as: https://www.iana.org/time-zones

IBM z/OS, VM, (and I suspect STP) are badly afflicted with NIH
concerning this otherwise common utility.

-- gil

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