How can I format DateTime to web UTC format

Question

I have a DateTime which I want to format to  2009-09-01T00 00 00 000Z   but the following code gives me  2009-09-01T00 00 00 000 01 00   both lines    new DateTime 2009  9  1  0  0  0  0  DateTimeKind Utc  ToString  yyyy - MM - dd T HH   mm   ss   fffzzz   new DateTime 2009  9  1  0  0  0  0  DateTimeKind Utc  ToUniversalTime   ToString  yyyy - MM - dd T HH   mm   ss   fffzzz     Any ideas how to make it work

User · Answer

This code is working for me   var datetime   new DateTime 2017  10  27  14  45  53  175  DateTimeKind Local   var text   datetime ToString  o    Console WriteLine text   --  2017-10-27T14 45 53 1750000 03 00     datetime from string var newDate   DateTime ParseExact text   o   null

User · Answer

You want to use DateTimeOffset class   var date   new DateTimeOffset 2009  9  1  0  0  0  0  new TimeSpan 0L    var stringDate   date ToString  u      sorry I missed your original formatting with the miliseconds  var stringDate   date ToString  yyyy - MM - dd T HH   mm   ss   fff Z

User · Answer

string Format   0 yyyy-MM-ddTHH mm ss FFFZ    DateTime UtcNow    returns 2017-02-10T08 12 39 483Z

User · Answer

Why don t just use The Round-trip   quot O quot    quot o quot   Format Specifier   The  quot O quot  or  quot o quot  standard format specifier represents a custom date and time format string using a pattern that preserves time zone information and emits a result string that complies with ISO 8601  For DateTime values  this format specifier is designed to preserve date and time values along with the DateTime Kind property in text  The formatted string can be parsed back by using the DateTime Parse String  IFormatProvider  DateTimeStyles  or DateTime ParseExact method if the styles parameter is set to DateTimeStyles RoundtripKind  The  quot O quot  or  quot o quot  standard format specifier corresponds to the  quot yyyy - MM - dd T HH   mm   ss   fffffffK quot  custom format string for DateTime values and to the  quot yyyy - MM - dd T HH   mm   ss   fffffffzzz quot  custom format string for DateTimeOffset values  In this string  the pairs of single quotation marks that delimit individual characters  such as the hyphens  the colons  and the letter  quot T quot   indicate that the individual character is a literal that cannot be changed  The apostrophes do not appear in the output string  The O quot  or  quot o quot  standard format specifier  and the  quot yyyy - MM - dd T HH   mm   ss   fffffffK quot  custom format string  takes advantage of the three ways that ISO 8601 represents time zone information to preserve the Kind property of DateTime values   public class Example      public static void Main               DateTime dat   new DateTime 2009  6  15  13  45  30                                      DateTimeKind Unspecified          Console WriteLine  quot  0    1   -- gt   0 O  quot   dat  dat Kind            DateTime uDat   new DateTime 2009  6  15  13  45  30                                       DateTimeKind Utc          Console WriteLine  quot  0    1   -- gt   0 O  quot   uDat  uDat Kind           DateTime lDat   new DateTime 2009  6  15  13  45  30                                       DateTimeKind Local          Console WriteLine  quot  0    1   -- gt   0 O  n quot   lDat  lDat Kind           DateTimeOffset dto   new DateTimeOffset lDat          Console WriteLine  quot  0  -- gt   0 O  quot   dto             The example displays the following output         6 15 2009 1 45 30 PM  Unspecified  -- gt  2009-06-15T13 45 30 0000000        6 15 2009 1 45 30 PM  Utc  -- gt  2009-06-15T13 45 30 0000000Z        6 15 2009 1 45 30 PM  Local  -- gt  2009-06-15T13 45 30 0000000-07 00                6 15 2009 1 45 30 PM -07 00 -- gt  2009-06-15T13 45 30 0000000-07 00

User · Answer

Try this   DateTime date   DateTime ParseExact       Tue  1 Jan 2008 00 00 00 UTC         ddd  d MMM yyyy HH mm ss UTC        CultureInfo InvariantCulture     Previously asked question

User · Answer

The best format to use is  yyyy - MM - dd T HH   mm   ss   fffK    The last K on string will be changed to  Z  if the date is UTC or with timezone   -hh mm  if is local   http   msdn microsoft com en-us library 8kb3ddd4 aspx   As LukeH said  is good to use the ToUniversalTime if you want that all the dates will be UTC   The final code is   string foo   yourDateTime ToUniversalTime                             ToString  yyyy - MM - dd T HH   mm   ss   fffK

User · Answer

string foo   yourDateTime ToUniversalTime                             ToString  yyyy - MM - dd T HH   mm   ss   fff Z

User · Answer

Some people have pointed out that    ToUniversalTime    is somewhat unsafe in that it can cause unintended incorrect time dispalys    Expanding on that I   m providing a more detailed example of a solution   The sample here creates an extension to the DateTime object that safely returns a UTC DateTime where you can use ToString as desired      class Program       static void Main string   args                DateTime dUtc   new DateTime 2016  6  1  3  17  0  0  DateTimeKind Utc           DateTime dUnspecified   new DateTime 2016  6  1  3  17  0  0  DateTimeKind Unspecified              Sample of an unintended mangle            Prints  2016-06-01 10 17 00Z          Console WriteLine dUnspecified ToUniversalTime   ToString  u                Prints  2016 - 06 - 01 03 17 00Z          Console WriteLine dUtc SafeUniversal   ToString  u                Prints  2016 - 06 - 01 03 17 00Z          Console WriteLine dUnspecified SafeUniversal   ToString  u              public static class ConvertExtensions       public static DateTime SafeUniversal this DateTime inTime                return  DateTimeKind Unspecified    inTime Kind                new DateTime inTime Ticks  DateTimeKind Utc                inTime ToUniversalTime

[c#] How can I format DateTime to web UTC format?

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