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Amavasya (new moon) dates in Boise, 2031

Idaho, United States · 43.62°, -116.20° · America/Boise

Written and reviewed by The Kriya Yogi · Updated 5 October 2026

In 2031, Boise has 12 Amavasya dates, from Wed, Jan 22 to Sat, Dec 13. 5 match the Indian date, 7 fall a day earlier. The new-moon lunar day, traditionally associated with remembrance of ancestors and quiet practice.
DateFortnightTithi window (local)SunriseDetailsvs India
Wed, Jan 22AmavasyaWed, Jan 22, 12:58 AM – Wed, Jan 22, 9:32 PM8:12 AMNew moon at Wed, Jan 22, 9:32 PM1 day earlier
Fri, Feb 21AmavasyaThu, Feb 20, 11:26 AM – Fri, Feb 21, 8:50 AM7:36 AMNew moon at Fri, Feb 21, 8:50 AMSame
Sat, Mar 22AmavasyaFri, Mar 21, 11:10 PM – Sat, Mar 22, 9:52 PM7:46 AMNew moon at Sat, Mar 22, 9:52 PM1 day earlier
Mon, Apr 21AmavasyaSun, Apr 20, 10:47 AM – Mon, Apr 21, 11:00 AM6:53 AMNew moon at Mon, Apr 21, 11:00 AMSame
Tue, May 20AmavasyaMon, May 19, 11:46 PM – Wed, May 21, 1:19 AM6:16 AMNew moon at Wed, May 21, 1:19 AM1 day earlier
Thu, Jun 19AmavasyaWed, Jun 18, 2:05 PM – Thu, Jun 19, 4:26 PM6:04 AMNew moon at Thu, Jun 19, 4:26 PMSame
Fri, Jul 18AmavasyaFri, Jul 18, 5:15 AM – Sat, Jul 19, 7:42 AM6:20 AMNew moon at Sat, Jul 19, 7:42 AMTithi also holds at the next sunrise1 day earlier
Sun, Aug 17AmavasyaSat, Aug 16, 8:41 PM – Sun, Aug 17, 10:34 PM6:52 AMNew moon at Sun, Aug 17, 10:34 PM1 day earlier
Tue, Sep 16AmavasyaMon, Sep 15, 11:55 AM – Tue, Sep 16, 12:49 PM7:26 AMNew moon at Tue, Sep 16, 12:49 PMSame
Wed, Oct 15AmavasyaWed, Oct 15, 2:46 AM – Thu, Oct 16, 2:22 AM7:59 AMNew moon at Thu, Oct 16, 2:22 AM1 day earlier
Fri, Nov 14AmavasyaThu, Nov 13, 3:58 PM – Fri, Nov 14, 2:12 PM7:38 AMNew moon at Fri, Nov 14, 2:12 PMSame
Sat, Dec 13AmavasyaSat, Dec 13, 5:06 AM – Sun, Dec 14, 2:09 AM8:10 AMNew moon at Sun, Dec 14, 2:09 AM1 day earlier

What Amavasya is and how it is kept: the Amavasya 2031 guide.

Amavasya in Boise: questions

+ How many Amavasya days are there in 2031 in Boise?
12, computed for Boise's coordinates and the America/Boise time zone. The first falls on Wed, Jan 22 and the last on Sat, Dec 13.
+ Are Boise Amavasya dates the same as in India?
Not always. A tithi starts at the same instant everywhere, but the sunrise that decides the day happens at a different moment in Boise. In 2031, 5 of 12 dates match the Indian (Ujjain) date, 7 fall a day earlier and 0 a day later.
+ How is the date decided?
This calendar uses the local day on which the Amavasya tithi is in force at sunrise. The exact new-moon instant is shown alongside. 1 of this year's 12 entries for Boise are flagged because of that. Local temples may follow a particular sampradaya's rule, so check with them for ritual purposes.
+ How accurate are these times?
Times come from truncated astronomical series and should fall within a few minutes of a full ephemeris. Near a boundary a published panchanga may assign a different day. They are for planning practice, not for precise ritual muhurta.

Other observances in Boise

Amavasya 2031 nearby