Conversation so far:
what was principal photography?
Principal photography is the phase of film production in which the bulk of the movie is filmed, with actors on set and cameras rolling.
Where was Film City?
Film City is an integrated film studio complex situated near Sanjay Gandhi National Park at Goregaon East, Mumbai in India.

Question: what did the filming schedule say?
Self-contained rewrite: What did the Om Shanti Om filming schedule say after it was completed?