There is this example code, but then it starts talking about millisecond / nanosecond problems.

The same question is on MSDN, *[Seconds since the Unix epoch in C#][1]*.

This is what I&#39;ve got so far:

    public Double CreatedEpoch
    {
      get
      {
        DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0, 0).ToLocalTime();
        TimeSpan span = (this.Created.ToLocalTime() - epoch);
        return span.TotalSeconds;
      }
      set
      {
        DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0, 0).ToLocalTime();
        this.Created = epoch.AddSeconds(value);
      }
    }

  [1]: https://docs.microsoft.com/archive/blogs/brada/seconds-since-the-unix-epoch-in-c


How can I convert a Unix timestamp to DateTime and vice versa?

Why is

&gt; 1 January 1970 00:00:00

considered the *epoch time*?

Why is 1/1/1970 the &quot;epoch time&quot;?

How do you convert Unix [epoch time][1] into real time in C#? (Epoch beginning 1/1/1970)

[1]: http://en.wikipedia.org/wiki/Unix_time

How do you convert epoch time in C#?

I have a Python `datetime` object that I want to convert to unix time, or seconds/milliseconds since the 1970 epoch.

How do I do this?

How can I convert a datetime object to milliseconds since epoch (unix time) in Python?

I have been fighting with this for a bit now. I’m trying to convert epoch to a date object. The epoch is sent to me in UTC. Whenever you pass `new Date()` an epoch, it assumes it’s local epoch. I tried creating a UTC object, then using `setTime()` to adjust it to the proper epoch, but the only method that seems useful is `toUTCString()` and strings don’t help me. If I pass that string into a new date, it should notice that it’s UTC, but it doesn’t.

    new Date( new Date().toUTCString() ).toLocaleString()

My next attempt was to try to get the difference between local current epoch and UTC current epoch, but I wasn’t able to get that either.

    new Date( new Date().toUTCString() ).getTime() - new Date().getTime()

It’s only giving me very small differences, under 1000, which is in milliseconds.

Any suggestions?

Convert UTC Epoch to local date

The `time` module can be initialized using seconds since epoch:

    &gt;&gt;&gt; import time
    &gt;&gt;&gt; t1=time.gmtime(1284286794)
    &gt;&gt;&gt; t1
    time.struct_time(tm_year=2010, tm_mon=9, tm_mday=12, tm_hour=10, tm_min=19, 
                     tm_sec=54, tm_wday=6, tm_yday=255, tm_isdst=0)

Is there an elegant way to initialize a `datetime.datetime` object in the same way?


In Python, how do you convert seconds since epoch to a `datetime` object?

I want to get the current timestamp like that : **1320917972**

    int time = (int) (System.currentTimeMillis());
    Timestamp tsTemp = new Timestamp(time);
    String ts =  tsTemp.toString();

Android Get Current timestamp?

I have a time in UTC from which I want the number of seconds since epoch.

I am using strftime to convert it to the number of seconds. Taking 1st April 2012 as an example.

    &gt;&gt;&gt;datetime.datetime(2012,04,01,0,0).strftime(&#39;%s&#39;)
    &#39;1333234800&#39;

1st of April 2012 UTC from epoch is 1333238400 but this above returns 1333234800 which is different by 1 hour. 

So it looks like that strftime is taking my system time into account and applies a timezone shift somewhere. I thought datetime was purely naive?

How can I get around that? If possible avoiding to import other libraries unless standard. (I have portability concerns).





Convert python datetime to epoch with strftime

I&#39;ve been learning Dart, but I don&#39;t know how to generate a timestamp. I have tried this:

    void main() {
      print((new Date()).millisecondsSinceEpoch);
    }

Thanks to the IDE I was able to get this far, but
I&#39;m getting a confusing error:

    Exception: No such method: &#39;Date&#39;

Help?

How to get a timestamp in Dart?

I am trying to convert a long value (*number of milliseconds elapsed from 1/1/1970 i.e. Epoch*) to time of format `h:m:s:ms`.

The long value I use as timestamp, I get from the field `timestamp` of a logging event from log4j.  

So far I&#39;ve tried the following and it fails:   
 

    logEvent.timeStamp/ (1000*60*60)
    TimeUnit.MILLISECONDS.toMinutes(logEvent.timeStamp)

but I get incorrect value:    

    1289375173771 for logEvent.timeStamp
    358159  for logEvent.timeStamp/ (1000*60*60) 
    21489586 for TimeUnit.MILLISECONDS.toMinutes(logEvent.timeStamp)

How do I go about this?

Convert timestamp in milliseconds to string formatted time in Java

&gt; **Possible Duplicate:**  
&gt; [How do you convert epoch time in C#?](https://stackoverflow.com/questions/2883576/how-do-you-convert-epoch-time-in-c)  

&lt;!-- End of automatically inserted text --&gt;

I&#39;m trying to figure out how to get the epoch time in C#. Similar to the timestamps given on this website: http://www.epochconverter.com/

Does DateTime have a method for that?

How do I get epoch time in C#?

How do I extract the epoch value to `Long` from instances of `LocalDateTime` or `LocalDate`? I&#39;ve tried 
the following, but it gives me other results:

    LocalDateTime time = LocalDateTime.parse(&quot;04.02.2014  19:51:01&quot;, DateTimeFormatter.ofPattern(&quot;dd.MM.yyyy  HH:mm:ss&quot;));
    System.out.println(time.getLong(ChronoField.SECOND_OF_DAY)); // gives 71461
    System.out.println(time.getLong(ChronoField.EPOCH_DAY)); // gives 16105
What I want is simply the value `1391539861` for the local datetime `&quot;04.02.2014  19:51:01&quot;`.
My timezone is `Europe/Oslo` UTC+1 with daylight saving time.

How to extract epoch from LocalDate and LocalDateTime?

I have used a ruby script to convert iso time stamp to epoch, the files that I am parsing has following time stamp structure: 

    2009-03-08T00:27:31.807

Since I want to keep milliseconds I used following ruby code to convert it to epoch time: 

    irb(main):010:0&gt; DateTime.parse(&#39;2009-03-08T00:27:31.807&#39;).strftime(&quot;%Q&quot;)
    =&gt; &quot;1236472051807&quot;

But In python I tried following: 

    import time 
    time.strftime(&#39;%Y-%m-%d %H:%M:%S&#39;, time.gmtime(1236472051807))

But I don&#39;t get the original time date time back, 

    &gt;&gt;&gt; time.strftime(&#39;%Y-%m-%d %H:%M:%S&#39;, time.gmtime(1236472051807))
    &#39;41152-03-29 02:50:07&#39;
    &gt;&gt;&gt; 

I wonder is it related to how I am formatting? 

Converting epoch time with milliseconds to datetime

The statement gives me the date and time. 

How could I modify the statement so that it returns only the date (and not the time)?

    SELECT to_timestamp( TRUNC( CAST( epoch_ms AS bigint ) / 1000 ) );

PostgreSQL: how to convert from Unix epoch to date?

I have a date inside a string, something like &quot;12-December-2012&quot;.
How can I convert this into milliseconds (long)?

How to convert a string Date to long millseconds

I have a sheet with a column of unix epoch times (in seconds): 1500598288

How can I convert these into normal dates?

Convert Unix Epoch Time to Date in Google Sheets

Java 8&#39;s `LocalDateTime` has an `ofEpochSecond` method. Unfortunately, there is no such method in the `ZonedDateTime`. Now, I have an Epoch value and an explicit `ZoneId` given. How do I get a `ZonedDateTime` out of these?

Java 8: How to create a ZonedDateTime from an Epoch value?

How to get the current date value in epoch i.e., number of days elapsed since 1970-1-1. I need solution in unix shell script.

Get Current date in epoch from Unix shell script

I have a string with a date format such as 

    Jun 13 2003 23:11:52.454 UTC

containing millisec... which I want to convert in epoch. 
Is there an utility in Java I can use to do this conversion?



Convert a date format in epoch

I would like to get the current timestamp and print it out using `fprintf`.

How do I get the unix timestamp in C as an int?

How come date is converting to wrong time?

    result=$(ls /path/to/file/File.*)
    #/path/to/file/File.1361234760790

    currentIndexTime=${result##*.}
    echo &quot;$currentIndexTime&quot;
    #1361234760790

    date -d@&quot;$currentIndexTime&quot;
    #Tue 24 Oct 45105 10:53:10 PM GMT

All Epoch Solutions on Gang of Coders

Total of 21 Epoch Solutions