timezone

问题 How do you convert 2 dates one in BST(Current date) and the other in GMT so that they can be compared using the calendar date before() and after() methods? I don't know if BST is referring to British Summer Time. I am running on a laptop with English settings. I don't know how best to do the comparison to see if one is greater than the other or equals. I figure the timezone is the problem to me successfully using the calander date after() and before() methods. I was checking equality based on

问题 I'm developing an application which takes data from Google TimeZone API . Simply I have time in milliseconds of desired place on Earth. For Example : 1504760156000 it's showing Date time In London which is Thu Sep 07 2017 09:55:56 As I'm in TimeZone +05:00 from UTC if I manipulate 1504760156000 these milliseconds it will show me whole date time like below: Thu Sep 07 2017 09:55:56 GMT+0500 (Pakistan Standard Time) but I want to show: Thu Sep 07 2017 09:55:56 GMT+0100 (British Summer Time)

问题 I can't seem to find the information on the ggplot2 0.9.0 documentation, 0.9.0 transition guide, or search. I guess in earlier versions you'd add the tz argument to scale_x_datetime . I've tried placing the tz argument in different places within scale_x_datetime but keep getting errors. See below. My datetime data is in POSIXct format with GMT timezone. When I plot it, the axis ticks and breaks are showing my local timezone (EST). I'd like midnight on the axis to be midnight in GMT timezone.

问题 I live in a country where they change the time twice a year. That is: there is a period in the year when the offset from UTC is -3 hours (-180 mins) and other period where the offset is -4 hours (-240 mins) Grafically: |------- (offset = -3) -------|------- (offset is -4) -------| start of year mid end of year My question is: the "timezone" is just the number representing the offset? that is: my country has two timezones? or the timezone includes this information? This is important because I

问题 Today I noticed my cygwin shell is showing the wrong time. It is actually UTC time while it is supposed to be my local time. As soon as I unset the TZ variable it shows the local time. Here are some commands which show the situation. I am running windows 10. My windows has UTC-5:00 timezone and its time is OK.I do not remember when did it start to be like this but my colleagues computers are fine. Has anyone seen this before ? $ date Mon, Oct 31, 2016 9:13:38 PM $ date --utc Mon, Oct 31, 2016

问题 I am trying to convert a formatted date String to Date object. Date String is formatted to some other timezone. When I do sdf.parse(String) it returns me my System date object. Code is as below, static Date convertGMTTime(String timeZone, long longDate){ Date convertedTime = null; SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); try{ Date date = new Date(longDate); System.out.println("timezone: "+timeZone +", timestamp: "+date); Locale locale = Locale.ENGLISH; TimeZone

问题 I am trying to convert a formatted date String to Date object. Date String is formatted to some other timezone. When I do sdf.parse(String) it returns me my System date object. Code is as below, static Date convertGMTTime(String timeZone, long longDate){ Date convertedTime = null; SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); try{ Date date = new Date(longDate); System.out.println("timezone: "+timeZone +", timestamp: "+date); Locale locale = Locale.ENGLISH; TimeZone

问题 I have a time that is being in Eastern Time Zone, but I want to adjust it to CENTRAL TIME ZONE. Both time zones are in USA. I never do it before? I don't know how to convert it. Please help me? 回答1: This is one possible method: $dt = new DateTime('2011-02-22 16:15:20', new DateTimeZone('America/New_York')); echo $dt->format('r') . PHP_EOL; $dt->setTimezone(new DateTimeZone('America/Chicago')); echo $dt->format('r') . PHP_EOL; You can get a list of available time zones with: print_r

问题 there is a form having a drop down for country ,user will select the country ,then there is a drop down for time zone ,user will select the time zone which are available in country selected by the user.Then user will enter the local date( eg: 26-Dec-2014) and time( 23:11)(24 hours time) this entered date and time is for the selected country and time zone. now i have to convert this date and time to GMT time zone. how can i do this using joda time how the daylight saving time(DST) will be

问题 Amazon recently announced support for time zone change in Oracle RDS. Since this is still not supported for Microsoft SQL Server 2012, are there any workarounds, to obtain functionality similar to changing the whole database time zone? 回答1: Since you're asking for workarounds... We basically totally disregard server time/database time zone and work entirely off of UTC. GetUtcDate() for instance for all 'DateCreated' columns. Since we've committed to that approach we just don't bump up against