Answer

Porsi timing depends on the exact sunrise time in Mumbai on 8 August and the Jain tradition/calculation method being followed.

In Jain practice, Porsi generally means the period after sunrise, commonly understood as approximately one-fourth of the daytime.

Explanation

To calculate it correctly, we need:

• Location: Mumbai
• Date: 8 August
• Sunrise time for that date
• Day length from sunrise to sunset

Without the verified sunrise and sunset time for Mumbai on that exact date, I should not give an exact Porsi time.

Takeaway

For religious observance, please confirm the exact Mumbai Jain Panchang timing for 8 August, because Porsi should be followed according to the local Jain Panchang.