dst

I could manage to change time zone on Heroku but still it is giving one hour less than my local time. Can anyone help on how to set DST (daylight saving) offset on Heroku? Heroku apps run on a normal unix system, and you have all the zoneinfo files there. I'm also fairly sure they're up-to-date. As far as unix goes, you should be able to set your TZ env var with something like: $ heroku config:set TZ=Europe/Berlin You can see the valid zoneinfo names with: $ heroku run find /usr/share/zoneinfo/posix Generally speaking, though, you'll want to run your application on an UTC environment, and

I have a table with users, UTC time offset, and if they observe daylight saving time. Is there a built in way to get the correct user time? Right now I'm doing this: SELECT CASE USEDAYLIGHTSAVING WHEN 1 THEN CASE DATEDIFF(HH,GETUTCDATE(),GETDATE()) -- I know the server is set to Mountan time and follows daylight saving time -- MDT = -6 -- MST = -7 WHEN -6 THEN DATEADD(HH,TIMEZONEOFFSET+1,GETUTCDATE()) ELSE DATEADD(HH,TIMEZONEOFFSET,GETUTCDATE()) END ELSE DATEADD(HH,TIMEZONEOFFSET,GETUTCDATE()) END FROM USERS It works but if the server get's moved to another timezone or doesn't fallow daylight

I'm working with a 3rd party API that returns Time of Day values as DateTime values filling in Jan 1, 1970 as the date part. So for 5AM, it will return something like 1969-12-31T21:03:00.000-08:00 The problem is that, when if the user was on London time, C# fails to apply BST adjustment for 1970-01-01. For example, 1970-01-01 5AM in UTC should be 1970-01-01 6AM in London. See conversion But, C# doesn't seem to apply this conversion: var utcTime = new DateTime(1970, 1, 1, 5, 0, 0, DateTimeKind.Utc); var britishZone = TimeZoneInfo.FindSystemTimeZoneById("GMT Standard Time"); var ukTime =

I have inherited a legacy application where all the dates and times are stored in the local timezone (UK). I am not in a position to change how these are stored. However, the requirement is to display all the dates in GMT within the app. Therefore when I retrieve a list of events from the database I need it to display them all in this time format whilst observing if daylight saving is in operation for each particular event date. Using the following logic I can determine if daylight saving is active within the query: IF(CAST(TIMEDIFF(NOW(), UTC_TIMESTAMP()) AS SIGNED) >0, DATE_FORMAT(CONVERT_TZ