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| Subject | ： Re: SAD Update V1.0.10.3.1a TimeZoneOffset in Canvas.n |
| Date | ： 2009/06/05(Fri) 02:25:17 |
| Contributor | ： Akio Morita |
> Probably we have to extend the date format to include the time zone information to solve the issue.
>
I propose {Y, m, d, H, M, S, TimeZoneOffset} as extended format.
This format is already supported by Date function family since 2008-01-28.
Both Date$[] and ToDate$[] functions return extended format including TimeZoneOffset.
In order to handle local time of some time zone, we have to handle DST(Daylight Saving Time).
But current Date function family does not support DST.
At the transition point of DST, local time COULD be rewinded.
example).
DST to normal time transition case:
01:00:00 DST
01:00:01 DST
....
01:59:58 DST
01:59:59 DST
01:00:00
01:00:01
....
In this case, 01:00:00 == 02:00:00 DST