CODEWITHSUNDEEP
javascriptdate
Robby
Robby

Reputation:

Dates before Jan. 01 1970?

I'm trying to write a javascript function that calculates the time since Oct 11th, 1910 so I can throw it into a timer for a project I'm working on. I get that javascript's milliseconds works from epoc, but I don't and can't find a way to get the milliseconds since a date earlier than 01.01.1970

Does anyone have any loose code that can do the above that they may be willing to share?

Upvotes: 14

Views: 18901

Answers (3)

Michael Yurin
Michael Yurin

Reputation: 1060

Number of milliseconds since Oct 11th, 1910 

console.log(new Date() - new Date('1910', '10', '11'))

// new Date().valueOf() - milliseconds since 1970
// -(new Date('1910', '10', '11')).valueOf() - milliseconds from 1910 since 1970

Upvotes: 0

nickf
nickf

Reputation: 546303

Try this:

var yeOldeTimes = new Date();
yeOldeTimes.setFullYear(1910, 9, 11);

var myNewDate = new Date();
console.log("Milliseconds since Ye Olde Times: " + (myNewDate - yeOldeTimes));

Upvotes: 3

Rodrigo
Rodrigo

Reputation: 4395

var oldGoodTimes = new Date(1910, 9, 11); // January = 0
var actualDate = new Date();
console.log(actualDate.getTime() - oldGoodTimes.getTime());

Upvotes: 21

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