Sensex gains over 1,700 points to cross 81,000, per Times of India report

1. What happened

   According to a Times of India headline, the Sensex index ended more than 1,700 points higher and crossed the 81,000 mark. The headline describes the session as Diwali fireworks continuing in the market.

2. When it started

   The exact trading date is not given in the material provided. The headline links the rally to the Diwali period.

3. How it spread

   The source excerpt gives only the headline and closing gain, not the full market breakdown. Details of how the index moved during the session are not available.

4. Why it matters

   The headline says it lists the top reasons behind the move, but those reasons are cut off in the material provided. The specific drivers are unknown from this source.