Either you use fixed time zones like CET or +01:00 or +02:00 or you use the time zone region, e.g. Europe/Amsterdam. When you use time zone regions the Daylight-Saving settings are handled automatically, i.e. the output depends on the input day.

When I find a time zone format like "CET-1CEST,M3.5.0,M10.5.0/3" what's the meaning of the three field? I understand the CET-1CEST but what about the last two M3.5.0 and M10.5.0/3? I found this format in this tutorial for ESP32 NTP Time and in this list.

地球自转，太阳东升西落，由于各个国家地区经度不同，所以各地的时间也就不同，然后就有了一个时区 (Time Zone)的国际标准，把全球分为24个时区，规定格林尼治天文台旧址为本初子午线，即零度经线。

Another detail is that CET is an ambiguous name, because it's used by more than one timezone. Real timezones names use the ones defined by IANA database (always in the format Region/City, like Europe/Paris or Europe/Berlin).

Your fourth line, SELECT 4, now ()::timestamp AT TIME ZONE 'CET' repeats two of the mistakes of your earlier lines: (a) casting a timestamp with time zone into a timestamp without time zone thereby losing the offset info, and (b) using a pseudo time zone.

Is there a generic TimeZoneInfo for Central Europe that takes into consideration both CET and CEST into one? I have an app that is doing the following: TimeZoneInfo tzi = TimeZoneInfo.

There are a lot of countries which change from CET (Central European Time) to CEST (Central European Summer Time) during DST (Daylight Saving Time). So I thought that the Microsoft timezone database

I have a function that converts the date, resolution and position to a datetime, which I then set to the requisite time zone, from which I convert to UTC. However, I get the problem that the UTC date column contains a duplicate date rather than the required date, 2024-10-27 01:00

For your requested zones, the IDs are: "Eastern Standard Time" - for the Eastern time zone of US & Canada inclusive of both EST and EDT "GMT Standard Time" - for Great Britain, inclusive of both GMT and BST "Romance Standard Time" - for France and several other European countries, inclusive of both CET and CEST Yes - the names are confusing.

I want the time in Central European Standard Time (CET) in HH:mm format. The following works fine on a computer with CET set: Get-Date -f HH:mm 15:55 However, on a machine with GMT it returns 13:5...