DateTime Time Zone conversion bug

Question

I try to convert my local time (Kiyv, Riga, UTC+02:00) to UTC, but there is an error in the following method

TimeZoneInfo.ConvertTimeToUtc(clientDate,
    TimeZoneInfo.FindSystemTimeZoneById(tTimeZone.SystemId));

The result is 19.06.2015 13:35:00, but as I know the result should be 19.06.2015 14:35:00

Why does this method return a result that has a 3 hours difference?

Europe and Ukraine have same DST rules as i understand https://en.wikipedia.org/wiki/Daylight_saving_time — MyNameIsSkrillex, Jun 19 '15 at 14:03
Assuming your `DateTime` is in local time why not just call `ToUniversalTime()`? — Lloyd, Jun 19 '15 at 14:03
That code works on my local machine, but it will work on another server, so i need to convert client date to UTC date using time zone information. — MyNameIsSkrillex, Jun 19 '15 at 14:08
Just google "Local time in Riga" and you'll instantly see that this is not a bug. — Hans Passant, Jun 19 '15 at 14:08

score 0 · Accepted Answer · answered Jun 19 '15 at 14:11

0

!!! Note: Currently FLE Summer Time is observed.

And this says it is UTC+3 currently. That's why it's too normal to get 3 hour differences when you calculate them.

As Hans Passanst says, when you write Google as Local time in Kyiv or Local time in Riga, both search result says (GMT+3)

Looks like DST started in 29 Mar 2015 and will end in 25 Oct 2015.

answered Jun 19 '15 at 14:11

Soner Gönül

Thanks, but why DateTime.UtcNow property returns me the difference in two hours (19.06.2015 14:35:00) ? – MyNameIsSkrillex Jun 19 '15 at 14:17
What time zone that your current machine using? Have you ever check it on your machine settings? – Soner Gönül Jun 19 '15 at 14:24
My location is Ukraine (Kiev timezone) to GMT+3 , but DateTime.UtcNow returns me my local time subtract 2 hours – MyNameIsSkrillex Jun 19 '15 at 14:26

1 Answers1