#Tell city time zone how to
#Tell city time zone windows

#Tell city time zone windows

(Note to self: I might need to ask someone in the Windows team to fix that…) I guess the Windows registry doesn’t remember the hotfix that went around that year. This is a little frustrating, but it’s not SQL’s fault – we need to blame Windows for that. But it doesn’t seem to appreciate that in Australia in the year 2000, thanks to the Sydney Olympics, Australia started daylight saving about two months earlier. Australia changed the dates in 2008, and the US changed its dates in 2005 – both countries saving daylight for more of the year. It works by using the Windows registry, which has all that information in it, but sadly, it’s not perfect when looking back in time. Figuring out whether daylight saving should apply or not was handled for me, and I did not have to do any conversion from local to UTC to establish some baseline. Now, with AT TIME ZONE, instead of saying: '20160101 00:00 +10:30', I can start with a datetime value which does not have a time zone offset, and use AT TIME ZONE to explain that it’s in Adelaide.Īrgument data type varchar is invalid for argument 1 of AT TIME ZONE function.īut despite the longwindedness of it, I love it, because at no point did I need to figure out that Adelaide was in +10:30, or that Eastern was -5:00 – I simply needed to know the time zone by name.

#Tell city time zone how to

How to use AT TIME ZONE in SQL Server 2016 The response had taken about 90 minutes, which was okay, but the report was showing otherwise.Īll this is fixed in SQL Server 2016. The problem came when a report was produced at the end of a period when the time zone changed, causing an incident that actually happened at 5:30pm (outside hours) to be listed as if it had occurred at 4:30pm (inside hours). I could see that another incident occurred outside working hours, and the response was within two hours.

Measuring SLA was quite straight forward – I could see that one incident happened during the customer’s working hours, and that they responded within one hour. Many years ago I remember having to fix a report which listed incidents that occurred along with response times ( I have blogged about this since). It’s loads of fun for the Gold Coast airport, whose runway crosses the NSW-QLD border.ĭatabase servers often run in UTC, because it’s simply easier to not have to deal with converting between UTC and local (and the reverse) in SQL Server. They’re close enough to the equator to not care, or something like that. Within Australia, we have three main time zones (Western, Central, and Eastern), but this extends to five in the summer, as the three states which extend to the northern end of Australia (WA, Qld, and NT) don’t try to save any daylight. Summer time is October to April, and Santa Claus sits on the beach with a cold drink, sweating through his thick red suit and beard. Except that if you’re reading this in the northern hemisphere, you’ll need to remember that by ‘winter’, I mean April to October. In winter time, we’re UTC+9:30, and in summer time we’re UTC+10:30. And like over a billion other people in the world, Adelaide people have to cope with being on a half-hour time zone. All rights reserved.ĪT TIME ZONE is such a cool feature and I hadn’t noticed it until recently, even though Microsoft have had a page about it since December. However, since 2007 almost all of the state uses Eastern Time, except for some counties in the northwestern and southwestern regions of the state which use Central Time.Image © Mark Boyle | Australia Day Council of NSW. Time zones have been debated in Indiana since the US standardized them in 1918. They will become active again after the next clock change as Daylight Saving Time begins or ends. The above time zones are used during other parts of the year. Time Zones Not Currently Being Observed in Indiana Offset Note: Local time in these time zones changes when Daylight Saving Time begins and ends. For example, Eastern Time (ET) refers to Eastern Standard Time (EST) or Eastern Daylight Time (EDT), depending on which is currently in use.

The time zones in the contiguous United States are often referred to by their generic name, without making a difference between standard time and DST designations.

Generalized Time Zones in Indiana Time Zone Abbreviation & Name Indiana has two time zones: Eastern Standard Time (EST) and Central Standard Time (CST) with the corresponding Daylight Saving Time (DST) designations, Eastern Daylight Time (EDT) and Central Daylight Time (CDT). How Many Time Zones Are There in Indiana? Time Zones Currently Being Used in Indiana Offset Business Date to Date (exclude holidays).