utc

How to convert DateTime in Specific timezone?

由 笑着哭i 提交于 2019-12-17 05:03:38
问题 I find it hard to understand how UTC works. I have to do the following but I'm still confused if I'd get the right result. Objectives: Ensure all saved dates in Database are in UTC format Update DefaultTimezone is in Manila time Ensure all returned dates are in Manila Time So the code is: public ConvertDate(DateTime? dateTime) { if (dateTime != null) { Value = (DateTime)dateTime; TimeZone = GetFromConfig.DefaultTimeZone(); } } public ConvertDate(DateTime? dateTime, int GMTTimeZone) { if

Difference between UTC and GMT Standard Time in .NET

由 我是研究僧i 提交于 2019-12-17 05:00:37
问题 In .NET, the following statements return different values: Response.Write( TimeZoneInfo.ConvertTime( DateTime.Parse("2010-07-01 5:30:00.000"), TimeZoneInfo.FindSystemTimeZoneById("Pacific Standard Time"), TimeZoneInfo.FindSystemTimeZoneById("GMT Standard Time")) ); // displays 7/1/2010 1:30:00 PM ..and this... Response.Write( TimeZoneInfo.ConvertTime( DateTime.Parse("2010-07-01 5:30:00.000"), TimeZoneInfo.FindSystemTimeZoneById("Pacific Standard Time"), TimeZoneInfo.FindSystemTimeZoneById(

Difference between UTC and GMT Standard Time in .NET

由 安稳与你 提交于 2019-12-17 05:00:10
问题 In .NET, the following statements return different values: Response.Write( TimeZoneInfo.ConvertTime( DateTime.Parse("2010-07-01 5:30:00.000"), TimeZoneInfo.FindSystemTimeZoneById("Pacific Standard Time"), TimeZoneInfo.FindSystemTimeZoneById("GMT Standard Time")) ); // displays 7/1/2010 1:30:00 PM ..and this... Response.Write( TimeZoneInfo.ConvertTime( DateTime.Parse("2010-07-01 5:30:00.000"), TimeZoneInfo.FindSystemTimeZoneById("Pacific Standard Time"), TimeZoneInfo.FindSystemTimeZoneById(

How does DateTime.ToUniversalTime() work?

由 喜欢而已 提交于 2019-12-17 04:58:48
问题 How does the conversion to UTC from the standard DateTime format work? More specifically, if I create a DateTime object in one time zone and then switch to another time zone and run ToUniversalTime() on it, how does it know the conversion was done correctly and that the time is still accurately represented? 回答1: There is no implicit timezone attached to a DateTime object. If you run ToUniversalTime() on it, it uses the timezone of the context that the code is running in. For example, if I

get UTC time in PHP

由 淺唱寂寞╮ 提交于 2019-12-17 04:28:11
问题 How can I get UTC/GMT +/- time stamp using PHP's date() function? For example, if I try date("Y-m-d H:i:s", time()); I will get Unix time stamp; but I need to get UTC/GMT time stamp with string GMT/UTC+/-0400 or GMT/UTC+/-1000 based on local timings. 回答1: Using gmdate will always return a GMT date. Syntax is same as for date . 回答2: A simple gmdate() will suffice <?php print gmdate("Y-m-d\TH:i:s\Z"); 回答3: As previously answered here, since PHP 5.2.0 you can use the DateTime class and specify

get UTC time in PHP

由 三世轮回 提交于 2019-12-17 04:28:04
问题 How can I get UTC/GMT +/- time stamp using PHP's date() function? For example, if I try date("Y-m-d H:i:s", time()); I will get Unix time stamp; but I need to get UTC/GMT time stamp with string GMT/UTC+/-0400 or GMT/UTC+/-1000 based on local timings. 回答1: Using gmdate will always return a GMT date. Syntax is same as for date . 回答2: A simple gmdate() will suffice <?php print gmdate("Y-m-d\TH:i:s\Z"); 回答3: As previously answered here, since PHP 5.2.0 you can use the DateTime class and specify

Globally convert UTC DateTimes to user specified local DateTimes

由 落爺英雄遲暮 提交于 2019-12-17 04:01:18
问题 I am storing all the DateTime fields as UTC time. When a user requests a web page, I would like to take his preferred local timezone (and not the local timezone of the server machine) and automatically display all the DateTime fields in all the web forms as local dates. Of course, I could apply the conversion on every DateTime.ToString() call in every form or implement some helper utility but it is a time consuming task, and also there are some 3rd party components which are tricky to

linux修改系统日期与时间

由 青春壹個敷衍的年華 提交于 2019-12-17 02:26:51
修改时区 cp /usr/share/zoneinfo/UTC /etc/localtime [hayuk@localhost qinghua]$ date 2012年 11月 02日 星期五 08:04:30 CST [hayuk@localhost qinghua]$ su - root 口令： [root@localhost ~]# cp /usr/share/zoneinfo/UTC /etc/localtime cp：是否覆盖“/etc/localtime”? y [root@localhost ~]# date 2012年 11月 02日 星期五 00:07:30 UTC 修改系统日期与时间 date -s "2012-11-03 10:25:25" [root@localhost ~]# date 2012年 11月 02日 星期五 00:08:27 UTC [root@localhost ~]# date -s "2012-11-03 10:25:25" 2012年 11月 03日 星期六 10:25:25 UTC [root@localhost ~]# date 2012年 11月 03日 星期六 10:25:27 UTC 来源： https://www.cnblogs.com/liangxiaxu/archive/2012/11/03/2752254.html

UTC标准时差时区

由 ﹥＞﹥吖頭↗ 提交于 2019-12-15 06:44:34
首先是UTC：协调世界时 协调世界时（英：Coordinated Universal Time ，法：Temps Universel Coordonné），又称世界统一时间，世界标准时间，国际协调时间。英文（CUT）和法文（TUC）的缩写不同，作为妥协，简称UTC。 世界标准时间UTC：GMT+0 GMT：格林尼治平时 世界时UT 即格林尼治时间，格林尼治所在地的标准时间。以地球自转为基础的时间计量系统。地球自转的角度可用地方子午线相对于地球上的基本参考点的运动来度量。为了测量地球自转，人们在地球上选取了两个基本参考点：春分点（见分至点）和平太阳，由此确定的时间分别称为恒星时和平太阳时。 但是格林尼治本地的时间比格林尼治平时，大一小时，也就是格林尼治本地的时间：GMT+1 CST时间：也就是北京时间 通常我们在数据库中存放，或者给用户看的时间都是CST时间 北京时间CST：GMT+8 ———————————————— 版权声明：本文为CSDN博主「LuckyTHP」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。 原文链接：https://blog.csdn.net/asd54090/article/details/94721796 UTC标准时间 + 时区 = 本地时间 UTC标准时间 = 本地时间 - 时区 中国时区： +0800

Inserting date / time in a specific zone into MySQL database

由 半腔热情 提交于 2019-12-13 23:58:47
问题 I found no way to insert date/time into MySQL database in a standard zone like UTC. The following segment of code authenticates a user by using Apache DBCP. public final class AuthenticationDAO { public boolean isAuthenticated(String userName, String password) throws SQLException { Connection connection = null; PreparedStatement preparedStatement = null; ResultSet resultSet = null; boolean status = false; try { connection = DatabaseConnection.getConnection(); preparedStatement = connection
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