timezone

问题 i've got a silly problem. I'm parsing Facebook user data, and I get the timezone as a number: timezone: The user's timezone offset from UTC For me ( 'America/Argentina/Buenos_Aires' ) it's -3. Now, how can I convert that number to a pytz.timezone ? Thank you! 回答1: There's not a 1:1 correspondence, so there's no way to do it without making some assumptions that are bound to be invalid. You can create your own tzinfo class that encodes the offset directly without trying to tie it back to a zone

问题 I am writing an app that has a time slot booking system. The users can be in different timezones, thus I need to store the values in the database in UTC time. I was wondering how UTC_TIMESTAMP() is calculated in MySQL. Is it reliable? If the server timezone is in an area with daylight savings will UTC_TIMESTAMP() always behave correctly, even during time changes due to daylight savings? 回答1: UTC is always +0:00 - it ignores daylight savings, regardless of whether or not it is in effect. In

问题 This is a question similar to this one. I'm really tempted to store datetimes in my app as local time rather than as UTC (which is considered a best practice). In the app I have a number of events happening, each assigned to a given location. Always when I display them to the user, I want to show the local time of the event. I.e.: ==================================================================================== Event time (with TZ) | As UTC | As local time | To be displayed | =============

问题 This is a question similar to this one. I'm really tempted to store datetimes in my app as local time rather than as UTC (which is considered a best practice). In the app I have a number of events happening, each assigned to a given location. Always when I display them to the user, I want to show the local time of the event. I.e.: ==================================================================================== Event time (with TZ) | As UTC | As local time | To be displayed | =============

问题 Having country-state code as input, is it possible to get the timezone using Java? For example us-tx -> (GMT-6) Tried using this answer, however this method uses only the country code, without the state and the output is : US/Alaska_US/Aleutian_US/Arizona_US/Central_US/East-Indiana_US/Eastern_US/Hawaii_US/Indiana-Starke_US/Michigan_US/Mountain_US/Pacific_US/Pacific-New_US/Samoa 回答1: This isn't possible - in any language. Many US states have more than one time zone, depending on which part of

问题 Having country-state code as input, is it possible to get the timezone using Java? For example us-tx -> (GMT-6) Tried using this answer, however this method uses only the country code, without the state and the output is : US/Alaska_US/Aleutian_US/Arizona_US/Central_US/East-Indiana_US/Eastern_US/Hawaii_US/Indiana-Starke_US/Michigan_US/Mountain_US/Pacific_US/Pacific-New_US/Samoa 回答1: This isn't possible - in any language. Many US states have more than one time zone, depending on which part of

问题 I am trying to instantiate GregorianCalendar with TimeZone GMT, but whenever I call the getTime() method, it gives me time in local TimeZone. Here is my code: Calendar cal = new GregorianCalendar(TimeZone.getTimeZone("GMT")); System.out.println(cal.getTime()); The output I am getting is this: Sat Nov 28 19:55:49 PKT 2009 Please help! 回答1: I'm not sure if this answers your question, but this is one way to get "now" in GMT. import java.text.* import java.util.* Calendar cal = new

问题 I am currently working on a registration form on a site, and I need to know exactly how to get the Timezone Offset for an active user-client to calculate his actual local time (no need for DST). I've tried the JS method using the function getTimeZoneOffset() but it seems that it not very recommended because it is relying on the user Time Settings. (I changed the clock time on my machine and try it) So any change in the user time settings will alter the timezone offset. Are there any other

问题 I've been trying to convert each UTC time back to the appropriate local timezone using standard SQL in GBQ, but couldn't find a good way to do it dynamically because I might have tons of different timezone name within the database. I'm wondering if anyone has an idea? The table I have contains 2 different columns (see screenshot) 回答1: Below example is for BigQuery Standard SQL #standardSQL WITH `project.dataset.yourtable` AS ( SELECT 'Pacific/Honolulu' timezone, TIMESTAMP '2020-03-01 03:41:27

问题 var Result1 = TimeZoneInfo.ConvertTimeFromUtc(DateTime.UtcNow, TimeZoneInfo.Local) var Result2 = TimeZoneInfo.ConvertTimeFromUtc(DateTime.UtcNow, TimeZoneInfo.FindSystemTimeZoneById(TimeZoneInfo.Local.Id)); Both this convert Utc time to local time, is there any difference between this 2 different ways in result or performance? which is good? why Microsoft not using TimeZoneInfo.Local directly(as for Result1) in sample here 回答1: The only difference is that the second takes a detour by getting