timezone

问题 im writing a twitter web service in php. When a user signs in, i receive this node: <utc_offset>-18000</utc_offset> I have to change the script's timezone so that it adapts to the user's real timezone. The only php function i have found for this is: date_default_timezone_set($timezone_identifier) but it won't let me use -18000 as a the $timezone_identifier parameter. So, how can i change the current user timezone based on two values: Server UTC offset and User UTC offset BTW, this is how i'm

问题 I want to extend a discussion I started on the Reddit Android Dev community yesterday with a new question: How do you manage an up-to-date timezone database shipped with your app using the JodaTime library on a device that has outdated timezone information? The problem The specific issue at hand relates to a particular timezone, "Europe/Kaliningrad". And I can reproduce the problem: On an Android 4.4 device, if I manually set its time zone to the above, calling new DateTime() will set this

问题 I have done a little experiment on php's DateTime class. In the documentation they have suggested the syntax for creating the object of DateTime class as given. Object oriented style: public DateTime::__construct() ( [ string $time = "now" [, DateTimeZone $timezone = NULL ]] ) Procedural style: DateTime date_create ( [ string $time = "now" [, DateTimeZone $timezone = NULL ]] ) Returns new DateTime object. Here the first argument they have specified as mandatory, as a date/time string as

问题 I have a rails application which works on postgres db. I have a model called UserTimings where there are two fields from_time and to_time. t.time "from_time" t.time "to_time" I expected that the time will be stored in complete UTC format with timezone information. After a little while, I realized that the database has this kind SQL query to create the table. from_time time without time zone, to_time time without time zone, I do not want this. I want to store with time zone . I want the +0530

问题 If I convert a UTC datetime to swedish format, summertime is included (CEST). However, while creating a datetime with sweden as the timezone, it gets CET instead of CEST. Why is this? >>> # Modified for readability >>> import pytz >>> import datetime >>> sweden = pytz.timezone('Europe/Stockholm') >>> >>> datetime.datetime(2010, 4, 20, 16, 20, tzinfo=pytz.utc).astimezone(sweden) datetime(2010, 4, 20, 18, 20, tzinfo=<... 'Europe/Stockholm' CEST+2:00:00 DST>) >>> >>> datetime.datetime(2010, 4,

问题 I have dates in the format 20Jan2013, 08Aug2012 etc, with their own specific timezones. So for example, 20Jan2013 might have a timezone ID of Australia/Melbourne, and 08Aug2012 might have an ID of Europe/London. What I want to do is, based on these timezones and the dates, calculate the UTC offset for that timezone on the given date. I've come up with this so far: DateTimeFormatter dtf = DateTimeFormat.forPattern("ZZ"); DateTimeFormatter dtf1 = DateTimeFormat.forPattern("ddMMMYYYY");

问题 I'm trying to set the timezone for a date in a Carbon object. It works fine locally but on my production box it keeps giving me Bad timezone error. I've tried: $date->setTimezone('7'); $date->setTimezone('+7'); $date->setTimezone('7:00'); $date->setTimezone('+7:00'); $date->setTimezone('UTC 7'); $date->setTimezone('UTC +7'); $date->setTimezone('UTC 7:00'); $date->setTimezone('UTC +7:00'); No idea why it's complaining on my production box. Can't find documentation either on what is the "proper

问题 I'm initializing my NSDateFormatter thusly: NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease]; [dateFormatter setLocale:[[[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"] autorelease]]; [dateFormatter setDateFormat:@"EEE, d MMM yyyy HH:mm:ss z"]; [dateFormatter setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]]; NSDate *date = [NSDate date]; NSString *dateString = [dateFormatter stringFromDate:date]; dateString is now: Thu, 29 Jul 2010 14:58:42 GMT+00

问题 I have dates in the format 2008-12-23T00:00:00Z . This look a lot like a ISO 8601 format with a Zulu (UTC) timezone. I though the following code would parse it (using commons-lang) : String pattern = DateFormatUtils.ISO_DATETIME_TIME_ZONE_FORMAT.getPattern(); Date d = DateUtils.parseDate(dateToParse, new String[] { pattern }); If I take the same pattern ( yyyy-MM-dd'T'HH:mm:ssZZ ) but remove the timezone, it works. Do you know how I can recognize the Zulu timezone ? I have access only to Java

问题 What is the best way to set the time zone in Tomcat for a single web app? I've seen options for changing the command-line parameters or environment variables for Tomcat, but is there a way to set it that is self-contained in the WAR file and not dependent on any Tomcat configuration? Edit: to reemphasize, I'm looking for a solution that can be contained within a WAR file, not dependent on Tomcat configuration. To put it another way, can one web app be configured to have a different time zone