Ruling · Dattātreyotpatti (Datta Jayanti) · 1965

Wednesday 8 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 390 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 Tuesday 7 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 Wednesday 8 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 03:27 on Wed 8 Dec to 01:21 on Thu 9 Dec.

    1965-12-07T19:27:26Z → 1965-12-08T17:21:07Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 16:56–18:51 on the 7th, 16:56–18:52 on the 8th.

    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 7th and 116 of 116 on the 8th.

    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 23372 s

  5. 05

    Ruling

    Dattātreyotpatti, Baoding, 1965: Wednesday 8 December.

    confidence: determinate

Say it like this

In Baoding, Dattātreyotpatti (Datta Jayanti) 1965 falls on Wednesday 8 December. Pūrṇimā runs from 03:27 on Wed 8 Dec to 01:21 on Thu 9 Dec and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1965/dattatreyotpatti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 8 Dec
Ahargaṇa, classicalDisc centre, no refractionWed 8 Dec
compat-drikpanchangComparison profileWed 8 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 7thCoveredSunset 8thCoveredRuled
Los Angeles11:27 → 09:2116:43112 min16:430 min7 Dec
Chicago13:27 → 11:2116:19118 min16:190 min7 Dec
Jersey City14:27 → 12:2116:28117 min16:280 min7 Dec
Port of Spain15:27 → 13:2117:43100 min17:430 min7 Dec
London19:27 → 17:2115:520 min15:5290 min8 Dec
Durban21:27 → 19:2118:470 min18:4833 min8 Dec
Dubai23:27 → 21:2117:290 min17:29107 min8 Dec
Delhi00:57 → 22:5117:240 min17:24109 min8 Dec
Kolkata00:57 → 22:5116:520 min16:52106 min8 Dec
Singapore02:57 → 00:5118:270 min18:2896 min8 Dec
Sydney05:27 → 03:2118:560 min18:5777 min8 Dec
Suva07:27 → 05:2118:330 min18:3387 min8 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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