Ruling · Dattātreyotpatti (Datta Jayanti) · 2076

Thursday 10 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 44 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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 Wednesday 9 December

Pūrṇimā is absent from pradoṣa. Not taken.

16:56 sunsetpradoṣa ends 18:52
16:3216:5617:2017:4418:0818:3218:5619:20

0 of 116 minutes covered

Evening of Thursday 10 December

Taken. The only evening Pūrṇimā reaches.

16:56 sunsetpradoṣa ends 18:52
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 19:46 on Wed 9 Dec to 19:36 on Thu 10 Dec.

    2076-12-09T11:45:40Z → 2076-12-10T11:36:05Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 16:56–18:52 on the 9th, 16:56–18:52 on the 10th.

    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 9th and 116 of 116 on the 10th.

    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 2635 s

  5. 05

    Ruling

    Dattātreyotpatti, Baoding, 2076: Thursday 10 December.

    confidence: determinate

Say it like this

In Baoding, Dattātreyotpatti (Datta Jayanti) 2076 falls on Thursday 10 December. Pūrṇimā runs from 19:46 on Wed 9 Dec to 19:36 on Thu 10 Dec and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2076/dattatreyotpatti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 10 Dec
Ahargaṇa, classicalDisc centre, no refractionThu 10 Dec
compat-drikpanchangComparison profileThu 10 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 9thCoveredSunset 10thCoveredRuled
Los Angeles03:46 → 03:3616:44113 min16:440 min9 Dec
Chicago05:46 → 05:3616:19119 min16:190 min9 Dec
Jersey City06:46 → 06:3616:29118 min16:290 min9 Dec
Port of Spain07:46 → 07:3617:44100 min17:450 min9 Dec
London11:46 → 11:3615:51129 min15:510 min9 Dec
Durban13:46 → 13:3618:4980 min18:500 min9 Dec
Dubai15:46 → 15:3617:30107 min17:300 min9 Dec
Delhi17:16 → 17:0617:24109 min17:250 min9 Dec
Kolkata17:16 → 17:0616:5383 min16:5313 min9 Dec
Singapore19:46 → 19:3618:5949 min18:5937 min9 Dec
Sydney22:46 → 22:3619:580 min19:5977 min10 Dec
Suva23:46 → 23:3618:340 min18:3587 min10 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

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