We haven’t yet mapped out the time travel itinerary.
INDEXER NOTES (SPOILERS!)
According to <a href='https%3A%2F%2Fwww.telegraphindia.com%2Fentertainment%2Fspielberg-ko-jhatka%2Fcid%2F461033'>The Telegraph Online</a>, the film opens with the notice “Based on Shobhana Desai’s Gujarati play Action Replay.”