gmt | 易学教程

How to get time from user with respect to timezone

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问题 Good day, I am working on a project reporting. and its my first time i have to deal with datetime. I have database mongodb, as we know mongodb stores date time in UTC. now i would like to show data from users provided date and time zone. for example if i am login in my system i can set my timezone from dropdown. say i choose GMT+05:00 now if i choose date start and end as 2018-07-05 and 2018-07-06 how can i get the proper time with user specified time zone. I guess if user has selected the

GMT Offset to PHP timezone

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问题 Is it possible to have something like? $offset = -05:00; $timezone = getTimeZone($offset); //return America/New_York date_default_timezone_set($timezone); How about the DST(Day Saving Light) if yes? EDIT What i have tried is function php_date_default_timezone_set($GMT,$timestamp) { $timezones = array( '-12:00'=>'Pacific/Kwajalein', '-11:00'=>'Pacific/Samoa', '-10:00'=>'Pacific/Honolulu', '-09:00'=>'America/Juneau', '-08:00'=>'America/Los_Angeles', '-07:00'=>'America/Denver', '-06:00'=>

squeryl date to long conversion

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问题 I want to store java.util.Date (or Timestamp) as an int (or Long) in my db using Squeryl. I'd like to control how the date is transformed to the number and vice versa. How can I achieve this? I'm pretty new to scala/squeryl, coming from java/hibernate. Back in java/hibernate I could create user types and either register them globaly or use them localy on a field with an annotation. This user type defined methods for how to persist the object type to db and how to load it from the db. I read

NSDate dateWithTimeIntervalSince1970 NOT returning GMT/UTC time

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问题 I tried an experiment because I need to be able to generate a unix timestamp (since 1970) in the app I am working on. NSLog(@"Getting timeIntervalSince1970"); double theLoggedInTokenTimestampDateEpochSeconds = [[NSDate date] timeIntervalSince1970]; This should've returned epoch seconds (since 1970) in GMT (Seconds since Jan 1, 1970). However, when conducting the experiment at at Mon Aug 15 09:54:30 2011, it returned 1313427270.504315 Testing this with a simple perl one-liner on my Mac OS

java.sql.SQLException: Unknown system variable 'tx_isolation' 异常

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在整合SSM的过程中持久层出现了异常 java.sql.SQLException: Unknown system variable 'tx_isolation' 也就是无法从数据库获取连接，在使用MyBatis连接数据库时没有任何问题，mysql版本8.0.17，驱动版本用的5.1.6，虽然不一样，但也可以连。但使用Spring的c3p0连接池后就不行了。解决办法 mysql版本和驱动版本不匹配，更换驱动版本。 < dependency > < groupId > mysql </ groupId > < artifactId > mysql-connector-java </ artifactId >  < version > 8.0.11 </ version > </ dependency > 在连接的url后面加上serverTimezone=UTC或GMT，如果指定使用gmt+8时区，需要写成GMT%2B8。  < bean id = " dataSource " class = " com.mchange.v2.c3p0.ComboPooledDataSource " > < property name = " driverClass " value = "

NSDateFormatter gives different output/wrong (GMT?) time

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问题 I have tried setting the timezone and locale of the NSDateFormatter but I can't seem to get anything to work. Here is the code NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init]; [dateFormat setDateFormat:@"MM/dd/yyyy hh:mm:ss"]; NSString *myFireDateString=[@"9/17/11" stringByAppendingString:@" 09:00:00"]; NSDate *myFireDate = [dateFormat dateFromString:myFireDateString]; NSLog(@"The datestring is is %@",myFireDateString); NSLog(@"The formatted date is %@",myFireDate); Here is the

PHP strtotime giving wrong date with GMT conversion? [closed]

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问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 6 years ago . I'm reading a Last-Modified header which as a string is "Mon, 21 May 2013 09:10:30 GMT" and trying to compare that to my local time() (New Zealand). But

Getting the correct GMT format using DateFormat Object

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问题 If i have a File object how can i get the lastModified() date of this file in this GMT format: Mon, 23 Jun 2011 17:40:23 GMT . For example, when i call the java method lastModified() on a file and use a DateFormat object to getDateTimeInstance(DateFormat.Long, DateFormat.Long) and also set the TimeZone to GMT, the file date displays in different format: File fileE = new File("/Some/Path"); Date fileDate = new Date (fileE.lastModified()); DateFormat dateFormat = DateFormat.getDateTimeInstance

user datetime setting as GMT, how to convert date to their localized setting?

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问题 In my users setting I have a dropdown with all the GMT dates for the user to select. In c#, how would I convert a datetime stored in the database to their GMT time? The time stored in the database is the servers time. 回答1: For .NET 3.5+, you can store the system time zone identifier with the user (you can get those from TimeZoneInfo.GetSystemTimeZones ) and use TimeZoneInfo to convert between time zones: // In a User class that has a string timeZoneId field (for example) public DateTime

Check if DST is in effect

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问题 In PHP, date('I') will tell me if Daylight Savings Time is in effect. Does this tell me if DST is in effect specifically for my server's configured timezone, or whether or not it's in effect period? I'm in Arizona where we don't observe DST. So I need my server to recognize that, say, New York is 2 hours ahead of me right now, but when DST kicks in March next year that it's 3 hours ahead of me. Update: Given the comment that it's for my server's configured time zone, how would I go about