Under what circumstances does NRML market order get converted to NRML limit order for Index options?

I placed a Market Order for Put Option NFO NIFTY March 12th 10700PE at 9:15 PM. But it automatically got converted to Limit Order. Can anyone please explain me under what all circumstances will this happen?
Please share any Documents/Links to know more regarding this, if any.

9:15 PM ?

Are you sure ?

If the market is closed then all market orders will be rejected…

It is already replied here Why does my market order get changed to a limit order while trading certain scrips?

Thank you!