How to create timestamp in seconds

Question

I have this task to populate this field:

x_fp_timestamp is the timestamp created when the form is generated. It is equal to the number of seconds since January 1, 1970 in UTC (Coordinated Universal Time).

So what I do in C# is

 long ts =  DateTime.Now.Ticks / TimeSpan.TicksPerSecond;

But in that case I am getting this error:

x_fp_timestamp : x_fp_timestamp invalid. Not within 15 minutes of present time: Thu Jan 10 21:30:25 GMT 2013. Expected 1357853425 plus/minus 900, but received 63493442997.

So my question is how to generate current timestamp in seconds?

Possible duplicate: http://stackoverflow.com/questions/3354893/how-can-i-convert-a-datetime-to-the-number-of-seconds-since-1970 — Davin Tryon, Jan 10 '13 at 21:59
here is a good link to look at it has so many great other examples as well Peretz [Converts a DateTime object into a unix timestamp number](http://www.java2s.com/Code/CSharp/Date-Time/ConvertsaDateTimeobjectintoaunixtimestampnumber.htm) — MethodMan, Jan 10 '13 at 22:09

score 17 · Accepted Answer · answered Jan 10 '13 at 21:59

17

DateTime.Now.Ticks does not start at 1970; try something like this instead:

 (DateTime.Now.ToUniversalTime() - new DateTime (1970, 1, 1)).TotalSeconds

answered Jan 10 '13 at 21:59

praseodym

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score 3 · Answer 2 · answered Jan 17 '22 at 17:21

3

I found DateTimeOffset.ToUnixTimeSeconds to work best for my specific situation (Unity 3D [.NET standard 2.1])

    long timeNow = DateTimeOffset.Now.ToUnixTimeSeconds();
    string timeStamp = timeNow.ToString();

answered Jan 17 '22 at 17:21

Jacksonkr

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How to create timestamp in seconds

2 Answers2