Task
 
Choose popular date libraries used by your language and show the   epoch   those libraries use.

A demonstration is preferable   (e.g. setting the internal representation of the date to 0 ms/ns/etc.,   or another way that will still show the epoch even if it is changed behind the scenes by the implementers),   but text from (with links to) documentation is also acceptable where a demonstration is impossible/impractical.

For consistency's sake, show the date in UTC time where possible.



Related task

   Date format


// version 1.1.2
 
import java.util.Date
import java.util.TimeZone
import java.text.DateFormat
 
fun main( args: Array<String>) {
    val epoch = Date(0)
    val format = DateFormat.getDateTimeInstance()
    format.timeZone = TimeZone.getTimeZone("UTC")
    println(format.format(epoch))
}