Conversation so far:
india is divided into how many time zones
Indian Standard Time is the time zone observed throughout India.
when was indian standard time established
After independence in 1947, the Indian government established Indian Standard Time as the official time for the whole country.
where is indian standard time calculated from
Indian Standard Time is calculated from the clock tower in Mirzapur.
what is mirzapur known for
Mirzapur is known for its carpets and brassware industries.

Question: how big is the city's population
Self-contained rewrite: how big is mirzapur's population