Ruling · Dattātreyotpatti (Datta Jayanti) · 1994

Saturday 17 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 401 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 Saturday 17 December

Taken. The only evening Pūrṇimā reaches.

16:57 sunsetpradoṣa ends 18:54
16:3316:5717:2117:4518:0918:3318:5719:21

117 of 117 minutes covered

Evening of Sunday 18 December

Pūrṇimā is absent from pradoṣa. Not taken.

16:58 sunsetpradoṣa ends 18:54
16:3416:5817:2217:4618:1018:3418:5819:22

0 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 07:57 on Sat 17 Dec to 10:17 on Sun 18 Dec.

    1994-12-16T23:56:38Z → 1994-12-18T02:17:03Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 16:57–18:54 on the 17th, 16:58–18:54 on the 18th.

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

  3. 03

    Rule

    Pūrṇimā must be present during pradoṣa. It covers 117 of 117 minutes on the 17th and 0 of 117 on the 18th.

    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 24037 s

  5. 05

    Ruling

    Dattātreyotpatti, Baoding, 1994: Saturday 17 December.

    confidence: determinate

Say it like this

In Baoding, Dattātreyotpatti (Datta Jayanti) 1994 falls on Saturday 17 December. Pūrṇimā runs from 07:57 on Sat 17 Dec to 10:17 on Sun 18 Dec and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1994/dattatreyotpatti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 17 Dec
Ahargaṇa, classicalDisc centre, no refractionSat 17 Dec
compat-drikpanchangComparison profileSat 17 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 16thCoveredSunset 18thCoveredRuled
Los Angeles15:57 → 18:1716:45113 min16:460 min16 Dec
Chicago17:57 → 20:1716:2023 min16:210 min17 Dec
Jersey City18:57 → 21:1716:300 min16:300 min17 Dec
Port of Spain19:57 → 22:1717:470 min17:480 min17 Dec
London23:57 → 02:1715:510 min15:520 min17 Dec
Durban01:57 → 04:1718:530 min18:540 min17 Dec
Dubai03:57 → 06:1717:320 min17:320 min17 Dec
Delhi05:27 → 07:4717:260 min17:270 min17 Dec
Kolkata05:27 → 07:4716:550 min16:550 min17 Dec
Singapore07:57 → 10:1719:010 min19:020 min17 Dec
Sydney10:57 → 13:1720:020 min20:030 min17 Dec
Suva11:57 → 14:1718:380 min18:390 min17 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