You are probably checking August 12 because a puja, vrata, or family observance depends on the lunar date, not merely the date printed on your calendar. The answer is straightforward for most of the day, but the intervals just after midnight and late at night need separate treatment.
Wednesday, August 12, 2026 is principally an Amavasya day. Krishna Paksha Chaturdashi remains in effect briefly after the civil date begins, Amavasya occupies most of the date, and Shukla Paksha begins before midnight.
The tithi sequence on August 12, 2026

For most regions, Krishna Paksha Chaturdashi continues until 1:17 AM, followed by Amavasya until 11:15 PM. Shukla Paksha begins after 11:15 PM.
| Time on August 12 | Panchang position | How to read it |
|---|---|---|
| Before 1:17 AM | Krishna Paksha Chaturdashi | The early post-midnight interval still belongs to the fourteenth tithi of the waning phase. |
| 1:17 AM to 11:15 PM | Amavasya | This is the principal Amavasya, or no-moon tithi, interval on August 12. |
| After 11:15 PM | Shukla Paksha | Amavasya has ended and the waxing phase has begun. |
If you only need a date label for a household calendar, mark August 12 as Amavasya and retain the two changeover times beside it. That boundary note prevents the common mistake of treating Amavasya as an uninterrupted 24-hour civil day.
Why the two changeovers matter
A tithi is a lunar day determined by the relationship of the Sun and Moon. It is not required to begin or end at civil midnight. One Gregorian date can therefore contain the end of one tithi, nearly all of another, and the beginning of the following lunar phase.
That distinction changes how you should describe an observance. Something performed before 1:17 AM falls within Krishna Paksha Chaturdashi under these timings; it should not be called an Amavasya observance merely because the civil date already reads August 12. An action after 11:15 PM likewise falls after the Amavasya tithi has ended.
For an activity scheduled well inside the 1:17 AM to 11:15 PM interval, the tithi boundary is not close. If the chosen time approaches either endpoint, however, a location-specific panchang becomes important. Panchang changeovers can vary with place, so a general regional time should not be transferred automatically to another city or country.
How to plan an observance using this panchang

- Confirm the location whose panchang you will follow. If your temple, family, or sampradaya uses a particular local calendar, its location-specific calculation should govern the observance.
- Record the actual time of the intended action. Before 1:17 AM, the tithi is Krishna Paksha Chaturdashi; from 1:17 AM until 11:15 PM, it is Amavasya; after 11:15 PM, Shukla Paksha has begun.
- Apply the rule of your tradition. Some observances depend on which tithi prevails at a prescribed part of the day rather than on whether that tithi appears anywhere within the civil date. Follow the established family, temple, or sampradaya practice instead of inventing a rule from the date label.
- Do not treat the tithi as a complete muhurta. A decision about an auspicious ceremonial starting time can require other panchang elements and local calculations. Amavasya being present tells you the lunar date; it does not, by itself, establish the suitability of every activity.
If you are coordinating several relatives, send them both the date and the relevant interval. Writing only “August 12 is Amavasya” can create confusion for anyone planning something immediately after midnight or near the end of the night.
Key takeaways
- Wednesday, August 12, 2026 is an Amavasya day for most of the civil date.
- Krishna Paksha Chaturdashi continues until 1:17 AM.
- Amavasya runs from 1:17 AM until 11:15 PM.
- Shukla Paksha begins after 11:15 PM.
- Use a location-specific panchang when an observance is close to either boundary or when a precise muhurta is required.
A useful calendar entry is: “Amavasya on August 12; 1:17 AM to 11:15 PM for most regions; verify locally.” If your sankalpa or ceremonial start approaches either changeover, settle the location and local panchang before fixing the time.
References


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