How to create a Date object from a string date in Javascript for the first years of AD?

Question

I have the following date string:

"Thu Nov 14 0002 01:01:00 GMT + 0200 (standard GTB time)"

and I'm trying to convert it to a Date object:

date = new Date("Thu Nov 14 0002 01:01:00 GMT+0200 (GTB Standard Time)")  
=> Invalid Date {}

and it does not work. AND

date = new Date("Thu Nov 14 2 01:01:00 GMT+0200 (GTB Standard Time)")  
=> Invalid Date {}

doesn't work either

but

date = new Date("Thu Nov 14 2002 01:01:00 GMT+0200 (GTB Standard Time)")

work

Does anyone know an elegant way to take it apart?

Answer 1

You can set any date. Including minutes, hours, and milliseconds, directly using a timestamp, dates before 1970 are negative integers.

alert(new Date(-62076675540000).toUTCString());

// >> Wed, 13 Nov 0002 23:01:00 GMT

Or you can set the date as a string by replacing the years to make it over 1000,
then subtracting the amount you added  with setFullYear()

var d=new Date("Thu Nov 14 1002 01:01:00 GMT+0200 (GTB Standard Time)")
d.setFullYear(d.getFullYear()-1000)
alert(d.toUTCString())

// >> Wed, 13 Nov 0002 23:01:00 GMT

You can automate a conversion to timestamps-

var s="Thu Nov 14 0002 01:01:00 GMT+0200 (GTB Standard Time)";
var y=s.split(' ')[3], y2=5000+(+y);
var d=new Date(s.replace(y,y2));
d.setFullYear(d.getFullYear()-5000)
var timestamp=+d;
alert(timestamp)
// >> -62076675540000

Answer 2

Javascript 1 1970 , 00: 00: 00.000 UTC. .

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