I know crew layover in SIN is more than 24 hours - India may be similar.

Also, Babu crew may be on a multi leg tour within asia which includes continuation of flight and/ or rerouting of aircraft with same crew from different airport (with or without pax). I know this is done with JNB, where the flight contiunues with some pax to CPT while crew gets off, stays one night, then next day takes another aircraft to CPT and then continues back to FRA.