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


 
load "guilib.ring"
 
New qApp {
         win1 = new qMainWindow() {
                setwindowtitle("Using QDateEdit")
                setGeometry(100,100,250,100)
                oDate = new qdateedit(win1) {
                        setGeometry(20,40,220,30) 
	                oDate.minimumDate()
                }
                show()
                }
                exec()
                }
 