I am sorry but you are failing to understand basic of it. It doesn't matter when you get salary.
If someone has salary of Rs.50K/month then esitmated salary is 6L. It doesn't matter if it is yet to paid. By June 15 that person will calcuate estimated tax payment on 6L salary and pay 15% of tax liability. Other estimated income like FD interest is already available on ledger balance on FDs on April 1 itself. If you had income arisen in between, that can be paid later by Sep 15 or Dec 15 or Mar 15.
Most companies/employers don't deduct TDS till Dec or even Jan next year. Then they deduct from Feb/March salary all at once.
In 26AS date of deduction/payment of TDS is already there and system calculates it from there automatically whether there was a need to advance payment or not.
Here you have not to worry when TDS is deducting or how much is deposited. You just need to see if 15%/45%/75%/100% is paid or not if your tax liability till March 31st is more than what already deposited.
