Here is the simple Jain maryada for “today’s kāl for water.”

• Date note: Today is August 23, 2025.
• Chauvihār (no water at night): From your local sunset today until sunrise tomorrow, do not drink any water. Finish your last sip a little before your city’s sunset time. After sunrise, you may take water again in daylight, preferably only boiled and properly filtered.
• Daytime rule: Use boiled and filtered water (ukālelū/ushṇodak), taken only in daylight.
• “Kal” (valid time) of boiled water:

- Common practice: Freshly boiled water is used the same day; many keep it for up to 24 hours. - During Chaturmās/monsoon: often limited to about 24 hours; stricter families prepare fresh more frequently. - Some traditions count by prahar (3‑hour blocks) and keep shorter limits by season.

• Tradition notes:

- Shvetāmbara: Daytime, boiled/filtered water; no water after sunset (Chauvihār). - Digambara: Same night rule; generally stress freshly boiled, daytime water only.

If health needs require exceptions, take proper pachchakkhān as per your guru‑paramparā.

Related guidance:

• Chauvihār water timing
• Ukālelā pānī no kāl (boiled water validity)
• How long can I use boiled water