Has there been any significant instances where the President has used his power to call for a joint sitting of both Houses?
There have been significant instances where the President has used his power to call for a joint sitting of both Houses. One such instance occurred in 1978 when then President Neelam Sanjiva Reddy called for a joint session after disagreement between the two houses on the Banking Services (Undertakings) Bill. Another example is from 2002, when President K R Narayanan summoned a joint sitting to resolve a deadlock between the two Houses over the Prevention of Terrorism Bill.