What is the difference between toGMTstring() and toUTCstring()?

Question

I am saving data in MongoDB server from Node.js application (using Mongoose).

Consider following code:

var mongoose = require(\'mongoose\');
var Schema =         


        

Answer 1

for ISO use toISOString()

var today = new Date();
var ISOstring = today.toISOString();
// 2020-08-03T23:59:58.123Z