> 'William Chops" Westfield ' <westfw@mac.com wrote:
>> I'm not convinced.  you KNOW the exact time in the past when it
>> happened (the timestamp.)  When do you care what that time was called?
>
> When you want to display it to a user, for example.
>

In my particular application, the logs are kept in UTC. When viewing the
logs, the user may be interested in what time something happened based on
where the user is, or may be interested in what time something happened
where the device is, or may be interested in UTC time, especially when
comparing with logs from other devices. So, the log only has the Unix
timestamp of when the event occurred. When displaying the log, I show the
time in UTC, the time at the GUI (where the user is), and the time at the
device. The GUI generally knows whether DST is in effect where it is (the
user has set his clock appropriately). However, it does not know whether
DST is in effect where the device is. So, my current solution is to assume
DST is in effect at the device if it is in effect at the GUI (and the
device location observers DST at all - I have a flag for that) and provide
a link for the user to toggle whether DST is in effect at the device
location.

THANKS for all the comments on this!

Harold



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