Ruling · Dattātreyotpatti (Datta Jayanti) · 1996

Tuesday 24 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 516 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 Monday 23 December

Pūrṇimā is absent from pradoṣa. Not taken.

17:00 sunsetpradoṣa ends 18:57
16:3617:0017:2417:4818:1218:3619:0019:24

0 of 117 minutes covered

Evening of Tuesday 24 December

Taken. The only evening Pūrṇimā reaches.

17:01 sunsetpradoṣa ends 18:57
16:3717:0117:2517:4918:1318:3719:0119:25

117 of 117 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 03:33 on Tue 24 Dec to 04:41 on Wed 25 Dec.

    1996-12-23T19:33:09Z → 1996-12-24T20:40:59Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:00–18:57 on the 23rd, 17:01–18:57 on the 24th.

    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 117 minutes on the 23rd and 117 of 117 on the 24th.

    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 30979 s

  5. 05

    Ruling

    Dattātreyotpatti, Baoding, 1996: Tuesday 24 December.

    confidence: determinate

Say it like this

In Baoding, Dattātreyotpatti (Datta Jayanti) 1996 falls on Tuesday 24 December. Pūrṇimā runs from 03:33 on Tue 24 Dec to 04:41 on Wed 25 Dec and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1996/dattatreyotpatti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 24 Dec
Ahargaṇa, classicalDisc centre, no refractionTue 24 Dec
compat-drikpanchangComparison profileTue 24 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 23rdCoveredSunset 24thCoveredRuled
Los Angeles11:33 → 12:4116:49113 min16:490 min23 Dec
Chicago13:33 → 14:4116:24119 min16:240 min23 Dec
Jersey City14:33 → 15:4116:33118 min16:340 min23 Dec
Port of Spain15:33 → 16:4117:50100 min17:510 min23 Dec
London19:33 → 20:4115:540 min15:55129 min24 Dec
Durban21:33 → 22:4118:570 min18:5780 min24 Dec
Dubai23:33 → 00:4117:350 min17:36107 min24 Dec
Delhi01:03 → 02:1117:300 min17:30110 min24 Dec
Kolkata01:03 → 02:1116:580 min16:59106 min24 Dec
Singapore03:33 → 04:4119:050 min19:0696 min24 Dec
Sydney06:33 → 07:4120:060 min20:0777 min24 Dec
Suva07:33 → 08:4118:420 min18:4286 min24 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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