Is there a way to calculate the time difference between two different time zones in javascript?
var startTime = doc.data().startTime;
output: Fri Dec 06 2019 19:00:00 GMT+0530 (India Standard Time)
var currentTime = new Date(Date.now()).toString();
output: Fri Dec 06 2019 13:15:30 GMT+0530 (India Standard Time)
How can I calculate the time difference between these two time zones?