This is the grid profile yesterday. It can be seen that before 9PM the frequency is intentionally brought down so that the sudden sheding can be allowed. Still the frequency spike is around 50.25Hz where upper limit is 50.05.
We should appreciate operators for this.

From 20:30 they started reducing generation to bring down the fre. and to make the grid stable some vil are shedded intentionally. From 9:15 the generation is increased in steps and again to keep the grid stable some villages are kept shedded until the full generation is online.

If this fre. was not brought down intentionally, the peak of fre. would be around 50.5 at 21:00 and this would definitely cause grid collapse.
So like doctor, health care works and police, the electrical staff also deserve clapping for this.

And finally, the power demand curve on 4th April vs 5th April.