DateTime Format In C#

C# DateTime Format

Date and Time in C# are handled by DateTime class in C# that provides properties and methods to format dates in different datetime formats. This article blog explains how to work with date and time format in C#. 

The following table describes various C# DateTime formats and their results. Here we see all the patterns of the C# DateTime, format, and results.
 
Format Result
DateTime.Now.ToString("MM/dd/yyyy") 05/29/2015
DateTime.Now.ToString("dddd, dd MMMM yyyy") Friday, 29 May 2015
DateTime.Now.ToString("dddd, dd MMMM yyyy") Friday, 29 May 2015 05:50
DateTime.Now.ToString("dddd, dd MMMM yyyy") Friday, 29 May 2015 05:50 AM
DateTime.Now.ToString("dddd, dd MMMM yyyy") Friday, 29 May 2015 5:50
DateTime.Now.ToString("dddd, dd MMMM yyyy") Friday, 29 May 2015 5:50 AM
DateTime.Now.ToString("dddd, dd MMMM yyyy HH:mm:ss") Friday, 29 May 2015 05:50:06
DateTime.Now.ToString("MM/dd/yyyy HH:mm") 05/29/2015 05:50
DateTime.Now.ToString("MM/dd/yyyy hh:mm tt") 05/29/2015 05:50 AM
DateTime.Now.ToString("MM/dd/yyyy H:mm") 05/29/2015 5:50
DateTime.Now.ToString("MM/dd/yyyy h:mm tt") 05/29/2015 5:50 AM
DateTime.Now.ToString("MM/dd/yyyy HH:mm:ss") 05/29/2015 05:50:06
DateTime.Now.ToString("MMMM dd") May 29
DateTime.Now.ToString("yyyy’-‘MM’-‘dd’T’HH’:’mm’:’ss.fffffffK") 2015-05-16T05:50:06.7199222-04:00
DateTime.Now.ToString("ddd, dd MMM yyy HH’:’mm’:’ss ‘GMT’") Fri, 16 May 2015 05:50:06 GMT
DateTime.Now.ToString("yyyy’-‘MM’-‘dd’T’HH’:’mm’:’ss") 2015-05-16T05:50:06
DateTime.Now.ToString("HH:mm") 05:50
DateTime.Now.ToString("hh:mm tt") 05:50 AM
DateTime.Now.ToString("H:mm") 5:50
DateTime.Now.ToString("h:mm tt") 5:50 AM
DateTime.Now.ToString("HH:mm:ss") 05:50:06
DateTime.Now.ToString("yyyy MMMM") 2015 May
  1. d -> Represents the day of the month as a number from 1 through 31.

  2. dd -> Represents the day of the month as a number from 01 through 31.

  3. ddd-> Represents the abbreviated name of the day (Mon, Tues, Wed, etc).

  4. dddd-> Represents the full name of the day (Monday, Tuesday, etc).

  5. h-> 12-hour clock hour (e.g. 4).

  6. hh-> 12-hour clock, with a leading 0 (e.g. 06)

  7. H-> 24-hour clock hour (e.g. 15)

  8. HH-> 24-hour clock hour, with a leading 0 (e.g. 22)

  9. m-> Minutes

  10. mm-> Minutes with a leading zero

  11. M-> Month number(eg.3)

  12. MM-> Month number with leading zero(eg.04)

  13. MMM-> Abbreviated Month Name (e.g. Dec)

  14. MMMM-> Full month name (e.g. December)

  15. s-> Seconds

  16. ss-> Seconds with leading zero

  17. t-> Abbreviated AM / PM (e.g. A or P)

  18. tt-> AM / PM (e.g. AM or PM

  19. y-> Year, no leading zero (e.g. 2015 would be 15)

  20. yy-> Year, leading zero (e.g. 2015 would be 015)

  21. yyy-> Year, (e.g. 2015)

  22. yyyy-> Year, (e.g. 2015)

  23. K-> Represents the time zone information of a date and time value (e.g. +05:00)

  24. z-> With DateTime values represents the signed offset of the local operating system's time zone from

    Coordinated Universal Time (UTC), measured in hours. (e.g. +6)

  25. zz-> As z, but with leading zero (e.g. +06)

  26. zzz-> With DateTime values represents the signed offset of the local operating system's time zone from UTC, measured in hours and minutes. (e.g. +06:00)

  27. f-> Represents the most significant digit of the seconds' fraction; that is, it represents the tenths of a second in a date and time value.

  28. ff-> Represents the two most significant digits of the seconds' fraction in date and time

  29. fff-> Represents the three most significant digits of the seconds' fraction; that is, it represents the milliseconds in a date and time value.

  30. ffff-> Represents the four most significant digits of the seconds' fraction; that is, it represents the ten-thousandths of a second in a date and time value. While it is possible to display the ten-thousandths of a second component of a time value, that value may not be meaningful.

  31. fffff-> Represents the five most significant digits of the seconds' fraction; that is, it represents the hundred-thousandths of a second in a date and time value.

  32. ffffff-> Represents the six most significant digits of the seconds' fraction; that is, it represents the millionths of a second in a date and time value.

  33. fffffff-> Represents the seven most significant digits of the second's fraction; that is, it represents the ten-millionths of a second in a date and time value.
Here is a complete C# code sample that uses these formats. 
  1. using System;  
  2.   
  3. namespace DateTimeFormatInCSharpSample  
  4. {  
  5.     class Program  
  6.     {  
  7.         static void Main(string[] args)  
  8.         {  
  9.             // Get current DateTime. It can be any DateTime object in your code.  
  10.             DateTime aDate = DateTime.Now;  
  11.   
  12.             // Format Datetime in different formats and display them  
  13.             Console.WriteLine(aDate.ToString("MM/dd/yyyy"));  
  14.             Console.WriteLine(aDate.ToString("dddd, dd MMMM yyyy"));  
  15.             Console.WriteLine(aDate.ToString("dddd, dd MMMM yyyy"));  
  16.             Console.WriteLine(aDate.ToString("dddd, dd MMMM yyyy"));  
  17.             Console.WriteLine(aDate.ToString("dddd, dd MMMM yyyy"));  
  18.             Console.WriteLine(aDate.ToString("dddd, dd MMMM yyyy"));  
  19.             Console.WriteLine(aDate.ToString("dddd, dd MMMM yyyy HH:mm:ss"));  
  20.             Console.WriteLine(aDate.ToString("MM/dd/yyyy HH:mm"));  
  21.             Console.WriteLine(aDate.ToString("MM/dd/yyyy hh:mm tt"));  
  22.             Console.WriteLine(aDate.ToString("MM/dd/yyyy H:mm"));  
  23.             Console.WriteLine(aDate.ToString("MM/dd/yyyy h:mm tt"));  
  24.             Console.WriteLine(aDate.ToString("MM/dd/yyyy HH:mm:ss"));  
  25.             Console.WriteLine(aDate.ToString("MMMM dd"));  
  26.             Console.WriteLine(aDate.ToString("yyyy’-‘MM’-‘dd’T’HH’:’mm’:’ss.fffffffK"));  
  27.             Console.WriteLine(aDate.ToString("ddd, dd MMM yyy HH’:’mm’:’ss ‘GMT’"));  
  28.             Console.WriteLine(aDate.ToString("yyyy’-‘MM’-‘dd’T’HH’:’mm’:’ss"));  
  29.             Console.WriteLine(aDate.ToString("HH:mm"));  
  30.             Console.WriteLine(aDate.ToString("hh:mm tt"));  
  31.             Console.WriteLine(aDate.ToString("H:mm"));  
  32.             Console.WriteLine(aDate.ToString("h:mm tt"));  
  33.             Console.WriteLine(aDate.ToString("HH:mm:ss"));  
  34.             Console.WriteLine(aDate.ToString("yyyy MMMM"));  
  35.   
  36.             Console.ReadKey();  
  37.         }  
  38.     }  
  39. }  
Above code sample generates the following output.
 
CSharp DateTime
  
Learn More on DateTime
 
Here is a detailed tutorial on DateTime and formatting: Working with DateTime In C#
 
 
 


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