Ruling · Dattātreyotpatti (Datta Jayanti) · 2041

Saturday 7 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 411 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two evenings

One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.

Evening of Friday 6 December

Pūrṇimā is absent from pradoṣa. Not taken.

16:56 sunsetpradoṣa ends 18:51
16:3216:5617:2017:4418:0818:3218:5619:20

0 of 116 minutes covered

Evening of Saturday 7 December

Taken. The only evening Pūrṇimā reaches.

16:56 sunsetpradoṣa ends 18:51
16:3216:5617:2017:4418:0818:3218:5619:20

116 of 116 minutes covered

Pūrṇimā presentPradoṣa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 02:58 on Sat 7 Dec to 01:42 on Sun 8 Dec.

    2041-12-06T18:58:02Z → 2041-12-07T17:42:16Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 16:56–18:51 on the 6th, 16:56–18:51 on the 7th.

    pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pūrṇimā must be present during pradoṣa. It covers 0 of 116 minutes on the 6th and 116 of 116 on the 7th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Only one evening qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 24649 s

  5. 05

    Ruling

    Dattātreyotpatti, Baoding, 2041: Saturday 7 December.

    confidence: determinate

Say it like this

In Baoding, Dattātreyotpatti (Datta Jayanti) 2041 falls on Saturday 7 December. Pūrṇimā runs from 02:58 on Sat 7 Dec to 01:42 on Sun 8 Dec and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2041/dattatreyotpatti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 7 Dec
Ahargaṇa, classicalDisc centre, no refractionSat 7 Dec
compat-drikpanchangComparison profileSat 7 Dec
No institution has a recorded ruling for Baoding.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/dattatreyotpatti · ruleset 2026.3-draft

Month
Mārgaśīrṣa, amānta
Pakṣa · aṅga
Śukla · Pūrṇimā
Kāla
Pradoṣa
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 104

“S 15 Dattatreyotpatti (pradosa).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePūrṇimāSunset 6thCoveredSunset 7thCoveredRuled
Los Angeles10:58 → 09:4216:43112 min16:430 min6 Dec
Chicago12:58 → 11:4216:19118 min16:190 min6 Dec
Jersey City13:58 → 12:4216:28117 min16:280 min6 Dec
Port of Spain14:58 → 13:4217:43100 min17:430 min6 Dec
London18:58 → 17:4215:520 min15:52111 min7 Dec
Durban20:58 → 19:4218:460 min18:4755 min7 Dec
Dubai22:58 → 21:4217:290 min17:29107 min7 Dec
Delhi00:28 → 23:1217:240 min17:24109 min7 Dec
Kolkata00:28 → 23:1216:520 min16:52106 min7 Dec
Singapore02:58 → 01:4218:570 min18:5796 min7 Dec
Sydney05:58 → 04:4219:550 min19:5678 min7 Dec
Suva06:58 → 05:4218:320 min18:3387 min7 Dec
Profile · tradition
pac-rp@2026.1 · smarta
Rule
dattatreyotpatti@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa