Answer

In Jain practice, if today is your boiled water upvas, you may drink only boiled and cooled water during the permitted daytime period.

Generally, boiled water is taken:

• After sunrise
• Before sunset

You should not drink water at night after sunset.

Explanation

For an upvas with boiled water, water is usually boiled properly, cooled, and then consumed during the day. The exact starting time can depend on your local sunrise time and the tradition followed in your family or sangh.

So, practically:

• You can start drinking after sunrise.
• Use only properly boiled water.
• Stop before sunset.

Spiritual Understanding

Upvas is not only about avoiding food. It is also a practice of self-control, awareness, and reducing harm to living beings. Drinking boiled water during the day follows the Jain discipline of carefulness and restraint.

Takeaway

You can start drinking boiled water after sunrise today and should stop before sunset. If your guru, family, or sangh follows a specific rule, follow that guidance.