Were NSE/BSE timings always 09:15 to 15:30?

Except for the Muhurat trading day or special trading sessions, when was the last time NSE/BSE market timings changed? Did we have shorter or longer timings before? What about other non-equity market timings?

Here’s a tabular history of NSE/BSE equity market timings for better clarity:

Time Period Market Timings (Equity) Remarks
Before 1992 12:00 PM to 2:00 PM Trading was conducted on a manual open outcry system. Limited hours due to manual operations.
1992-2001 10:00 AM to 3:30 PM Introduction of electronic trading systems by NSE in 1994 brought efficiency.
2001-2009 9:55 AM to 3:30 PM Trading hours extended slightly for better market accessibility.
Since October 19, 2009 9:00 AM to 3:30 PM Opening time advanced to 9:00 AM to align with global markets (e.g., Asian markets).

Disclaimer:
This information is fully given by ChatGPT-4 (OpenAI).

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