Time conversions from EST with daylight saving to GMT

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Phil Johnson - 29 Jan 2008 18:13 GMT

Hi,

I have a web application that will be hosted on servers with timezones
configured to EST with daylight saving.

My application takes an XML datafeed that contains times in GMT (also with
daylight saving that will change on different dates to EST)

Is there any way within the .net framework to convert the current time from
the server (which will be EST with daylight saving) to GMT?

If not in the .net framework, is there any other way to do it? I'm
considering having a configuration setting that the site owner can log on to
the site and change the time difference, but would prefer to have an
automated solution.

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Regards,

Phillip Johnson (MCSD For .NET)
PJ Software Development
www.pjsoftwaredevelopment.com

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Cowboy (Gregory A. Beamer) - 29 Jan 2008 18:55 GMT

It is an easy offset. This time of year, it is 5 hours off. During the
summer, you move ahead one hour, which makes it four hours.

There are some methods on the DateTime structure you should look at:

ToLocalTime() - This is probably the most useful for you
http://msdn2.microsoft.com/en-us/library/system.datetime.tolocaltime.aspx

ToUniversalTime() - opposite direction
http://msdn2.microsoft.com/en-us/library/system.datetime.tolocaltime.aspx

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Gregory A. Beamer
MVP, MCP: +I, SE, SD, DBA

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> Hi,
>
[quoted text clipped - 13 lines]
> the site and change the time difference, but would prefer to have an
> automated solution.

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Phil Johnson - 29 Jan 2008 19:32 GMT

Thanks George,

Looks ideal, I will give it a go.

Signature

Regards,

Phillip Johnson (MCSD For .NET)
PJ Software Development
www.pjsoftwaredevelopment.com

> It is an easy offset. This time of year, it is 5 hours off. During the
> summer, you move ahead one hour, which makes it four hours.
[quoted text clipped - 27 lines]
> > the site and change the time difference, but would prefer to have an
> > automated solution.

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Phil Johnson - 04 Feb 2008 13:38 GMT

The link given above really got me started on the timezone conversion issue,
but I also had some hurdles to overcome when comparing javascript utc
datetime from the client to the .NET utc date time on the server.

Here is how I got around the issues....

http://pjsoftwaredeveloper.blogspot.com/2008/02/comparing-net-date-on-server-to-
clients.html

Signature

Regards,

Phillip Johnson (MCSD For .NET)
PJ Software Development
www.pjsoftwaredevelopment.com

> Thanks George,
>
[quoted text clipped - 31 lines]
> > > the site and change the time difference, but would prefer to have an
> > > automated solution.

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Time conversions from EST with daylight saving to GMT

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