Fortunately, we can obtain the list of deprecated names from the source database, and filter it from our output.ĭownload the latest data only distribution of the tz database from the IANA site. List of time zones by country sorted by number of current time zones in the world List of UTC time offsets current UTC offsets List of time zone. Unfortunately, the copy of the tz database that both zoneinfo and pytz use does not have this information, and contains both deprecated and current names. To load the time zone tables from the command line, pass the zoneinfo directory path.

If presenting the list of time zone names to a user, it would be ideal to filter out the old names. This section describes the time zone settings maintained by MySQL. To retain backwards compatibility, the tz database maintains old names indefinitely, but encourages using only the new ones. For example, Asia/Calcutta was renamed to Asia/Kolkata, as city’s official name was decolonialized in 2001. Most of Arizona and Hawaii don't use DST. Almost all states in the US use Daylight Saving Time (DST). In addition the uninhabited atolls of Baker Island (AoE) and Wake Island (WAKT) add to the time zone count, making 11 the total number of time zones in the US. This is because they have been renamed to follow regional changes. Timezones Hawaiian Standard Time, (GMT-10:00) Hawaii Alaskan Standard Time, (GMT-09:00) Alaska Pacific Standard Time, (GMT-08:00) Pacific Time (US and Canada). There are 9 official time zones according to the law. If you are using the time zone names in your UI, you should be aware that some names are deprecated. Do you know the time zone of Australia You can find it in our list of countries and territories with their time zones. The CLDR project would be ideal, but at time of writing it doesn’t seem like there’s a good package for using it from within Python. That said, it’s often easiest to use the time zone names in a UI, such as in a dropdown list. Projects like CLDR (the Unicode Common Locale Data Repository) can be used to get more user-friendly strings from these keys. The zoneinfo documentation notes: Although it is a somewhat common practice to expose these to end users, these values are designed to be primary keys for representing the relevant zones and not necessarily user-facing elements. When support for time zones is enabled, Django stores datetime information in UTC in the database, uses time-zone-aware datetime objects internally.

Time zones list