This was the best single-day gain over a month.
A healthy set of quarterly numbers from leading private lender ICICI Bank also gave the mood a big lift.
The news that EPFO is going to invest in equities through ETFs from the next week came as yet another positive for market participants.
The benchmark BSE index regained the psychological level of 28,000 by hitting the day's high of 28,161.17 before closing at 28,114.56, up 409.21 points, or 1.48 per cent.
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On a weekly basis, both BSE Sensex and NSE Nifty ended largely flat.
Banking shares were in the driver's seat throughout. The state-owned SBI was the top gainer (up 5.25 per cent). ICICI Bank climbed 3.97 per cent after it reported a 12 per cent growth in net profit for the June quarter. Even Axis chipped in.
Coal India, Lupin, Dr Reddy's Hero MotoCorp too advanced. Out of the 30 Sensex stocks, as many as 25 flashed green.
Broader markets like mid-cap and small-cap indices ruled firm, which gained up to 1.03 per cent.
Globally, Asian peers closed the day with gains while European indices were little changed in their early trade following mixed earnings scorecard.