I leave this tab open all the time. I will enter timesheet data and it always adds the date that the page was first opened, not the date that I'm entering the hours worked. I assume the JS variable is being populated on page load, however, if you leave the page open, they all get that date.

For example, I do work for a client Monday the 28th, and I open Zoho and enter the time. Tuesday the 29th when I go to enter time for work done that day, it puts the date as the 28th.

It should refresh the date variable every time that window is opened instead.