timezone

问题 I found a workaround for Zend Date's DST Bug, but the workaround introduces another bug. The workaround simply sets the time twice. This introduces another bug, if the resulting date crosses the date boundary, the the day get incremented or decremented. I am wondering if there's a way to determine that the date at hand is a "time change" date, so that I can come up with a solid workaround to the Zend Date DST bug. 回答1: It turns out that PHP's function localtime() returns whether or not the

问题 I have an array of dates (in different time zones GMT) and I would like to calculate the hours that have elapsed between the first and the last date. For example, this would be an array of dates: [ 1 => 2016-06-05T08:45:00.000+02:00, 2 => 2016-06-05T09:55:00.000+02:00, 3 => 2016-06-05T12:10:00.000+02:00, 4 => 2016-06-05T14:25:00.000-04:00 ] I want to calculate the hours that have elapsed since the date with index 1 to 2, 2 to 3 and from 3 to 4. The problem is I do not know how to calculate

问题 I have date(01-oct-2014), time (00:37:31), GMT difference(-360) now I want to get the time conveted to CST. The solution can be in javascript Or oracle databse. I have read several articles but could'nt get any where..can some one help me out on this... 回答1: In Oracle, to convert your local time to time of another timezone, you need to CAST TIMESTAMP WITH TIMEZONE . For example, I want to convert 'IST' Indian standard time, i.e. my local timezone to 'CST', i.e. Central : SQL> WITH T AS 2 (

问题 I have a time in a specific timezone , I want to covert it to UTC . how can I achieve that using moment timezone ? http://momentjs.com/timezone/ in the documentation this is how to convert : jun.tz('America/Los_Angeles').format('ha z'); I am just not sure what timezone name to pass to convert it to UTC, or is there another function to use? 回答1: You can easily construct a moment in a specific time zone by using the moment.tz(...) syntax. This is slightly different from doing conversions with

问题 It's pretty easy to convert a given GMT date into local time if you're given the timezone identifier from this list in PHP: http://www.php.net/manual/en/timezones.php For example, you can do this (where $fromTimeZone is just 'GMT', $toTimeZone is just one of the constants from that list (i.e. 'America/Chicago'), and $datetime is the GMT date): public static function convertToTimezone($datetime, $fromTimeZone, $toTimeZone, $format = 'Y-m-d H:i') { // Construct a new DateTime object from the

问题 I have the timezone. I have the city. How can I get the country? Set<String> ids = DateTimeZone.getAvailableIDs(); for (String id : ids) { System.out.println(" "+id); } 回答1: There could be multiple countries per timezone, but if you want to print a list, I'd suggest putting them into a collection.. perhaps a two dimensional array. http://www.timezoneconverter.com/cgi-bin/zonehelp.tzc ======================= Based on your feedback and how your question changed, you should be able to use Google

问题 I have a df with dates and times like this: df <- data.frame(c("2018-09-28 00:00:00Z","2018-09-29 01:00:00Z","2018-09-30 10:00:00Z")) names(df) <- "startTime" The dates and times are in UTC time zone, so I format like this: df$startTime <- as.POSIXct(df$startTime, tz="Etc/UTC") I then want to put them in New York time, like this: attributes(df$startTime)$tzone <- "America/New_York" Now I want to extract just the date using as.Date. Unfortunately, the code below returns the dates to the UTC

问题 I have a typical php/html/javascript application. There is one main HTML page with a lot of javascript and AJAX calls to PHP to receive/send data. Among other things, the app tracks certain user actions, recording what the action is and the timestamp of the action. I'm getting the timestamp in javascript as new Date().getTime() . I send the action log to the server, which uses $dt = date('h:i:s', timestamp / 1000) to get a human-digestable time. (Note that for printing purposes I'm only

问题 a date input where the user enters 2019-12-22 gives these values: input.value : "2019-12-22" input.valueAsNumber : 1576972800000 input.valueAsDate : "Sat Dec 21 2019 16:00:00 GMT-0800 (Pacific Standard Time)" this resulting date object just seems wrong when the browser returns a value, it treats the user input as universal time so the date object's utc representation is the same as what the input displays to the user input.valueAsDate.getUTCDate() returns 22 , which is what the user entered

问题 I need to format a String that looks like this: "2018-07-20 18:53:46.598000 +02:00:00" into a DateTime object like this: 20/07/2018 (HH with Timezone applied):53:46 My approach has been: String dateTimePattern = "dd/MM/yyyy HH:mm:ss"; SimpleDateFormat dateTimeFormat = new SimpleDateFormat(dateTimePattern); Date feUltModDateTime = dateTimeFormat.parse(feUltMod); feUltMod = feUltModDateTime.toString(); But I'm getting a parse error: java.text.ParseException: Unparseable date: "2018-07-20 18:53