Given a particular date/time in a particular TimeZone, is there a way to calculate the difference in hours, on any particular day, between this date/time and a different Time Zone? (ie taking all TimeZone info into account including DST).
The reason I’m doing this is because I’m capturing a date/time via a web application (global) and need to calculate the precise equivalent date/time in different Time Zones.
Any tips would be appreciated-- thanks
Subject: just to clarify…
I am not using cookie based Locale info for diverse and historic reasons by the way.
Therefore, I am capturing the date/time but storing it incorrectly in the local timezone (ie since it’s a web app and the web server’s time zone is assumed), but I know the TimeZone of the user that inputed the date/time.
So effectively, I want to calculate the difference between two places in the world at any moment in time, so I can programmatically create an offset.
Subject: Is this for XPages?
Subject: no, not x-pages
Subject: Solution
@TimeMerge creats a Date/Time with the specified TimeZone info.
Subject: We use the LS NotesDateTime class to normalize stored dates to GMT
That way you can easily compute the differences and render them into the correct local time zone for every user.
Subject: thanks
…but I found my solution with @TimeMerge
Since I am capturing a StartDateTime using a web form, the server assumes the user time zone is the server time zone, which it is not in most cases (it’s a global app).
with @TimeMerge, I was able to extract just the the absolute date and time separately and merge them with whatever TimeZone I want in order to get the actual time stored correctly in the date/time item.