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Posted 10 Apr 2005


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UNIX timestamp to System.DateTime

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3.15 (18 votes)
10 Apr 2005
Converting UNIX timestamp to System.DateTime.


This article is a very simple example of how to convert a UNIX timestamp to a System.DateTime in Visual C#.

The UNIX timestamp

The UNIX timestamp represents the time measured in number of seconds since the Unix Epoch (1st of January 1970 00:00:00 GMT), and is well-known to PHP-developers.

How to convert UNIX timestamp to System.DateTime

Given below is an example of how to convert any given UNIX timestamp to a System.DateTime.

// This is an example of a UNIX timestamp for the date/time 11-04-2005 09:25.
double timestamp = 1113211532;

// First make a System.DateTime equivalent to the UNIX Epoch.
System.DateTime dateTime = new System.DateTime(1970, 1, 1, 0, 0, 0, 0);

// Add the number of seconds in UNIX timestamp to be converted.
dateTime = dateTime.AddSeconds(timestamp);

// The dateTime now contains the right date/time so to format the string,
// use the standard formatting methods of the DateTime object.
string printDate = dateTime.ToShortDateString() +" "+ dateTime.ToShortTimeString();

// Print the date and time

How to convert System.DateTime to UNIX timestamp

I know that this part is just as essential as the above, but it seems that I am running out of time... I will of course return with an update on how to convert the System.DateTime to a UNIX timestamp.

Any comments or suggestions are welcomed!

This is my first article on Visual C# ever, so bare with me...


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Comments and Discussions

Generalummm actually... Pin
Jonathan Lathigee22-Jan-10 10:23
MemberJonathan Lathigee22-Jan-10 10:23 
GeneralJavascript-time and UNIX-Epoch-time start at the same Epoch but are measured with a different scale Pin
protron1-Mar-11 9:54
Memberprotron1-Mar-11 9:54 
GeneralMy vote of 1 Pin
Deceptor114-Jan-10 10:04
MemberDeceptor114-Jan-10 10:04 
Generalactually, none of you bitches are correct Pin
Emil Müller4-Apr-08 11:25
MemberEmil Müller4-Apr-08 11:25 
GeneralRe: actually, none of you bitches are correct Pin
Mikhail-T8-May-12 7:13
MemberMikhail-T8-May-12 7:13 
QuestionIs this correct? Pin
toebens5-Oct-06 2:39
Membertoebens5-Oct-06 2:39 
GeneralVery Useful article Pin
MudkiSekhon28-Dec-05 23:13
MemberMudkiSekhon28-Dec-05 23:13 
GeneralCode sample not correct Pin
ricky82 14-Jul-05 0:12
Memberricky82 14-Jul-05 0:12 
GeneralDateTime to Unix Timestamp Pin
EiswuerfelJr29-Apr-05 7:02
MemberEiswuerfelJr29-Apr-05 7:02 
GeneralRe: DateTime to Unix Timestamp Pin
Anonymous29-Apr-05 22:22
MemberAnonymous29-Apr-05 22:22 
GeneralRe: DateTime to Unix Timestamp Pin
Miros7929-Apr-05 22:24
MemberMiros7929-Apr-05 22:24 
GeneralExample is incorrect Pin
David Palmer18-Apr-05 6:18
MemberDavid Palmer18-Apr-05 6:18 
GeneralAddSeconds Pin
bsieber11-Apr-05 2:29
Memberbsieber11-Apr-05 2:29 
GeneralRe: AddSeconds Pin
Miros7911-Apr-05 2:39
MemberMiros7911-Apr-05 2:39 

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