Ruling · Dattātreyotpatti (Datta Jayanti) · 2022

Wednesday 7 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 287 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 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

Evening of Thursday 8 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

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

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 10:32 on Wed 7 Dec to 12:08 on Thu 8 Dec.

    2022-12-07T02:31:58Z → 2022-12-08T04:08:11Z

  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 116 of 116 minutes on the 7th and 0 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 17247 s

  5. 05

    Ruling

    Dattātreyotpatti, Baoding, 2022: Wednesday 7 December.

    confidence: determinate

Say it like this

In Baoding, Dattātreyotpatti (Datta Jayanti) 2022 falls on Wednesday 7 December. Pūrṇimā runs from 10:32 on Wed 7 Dec to 12:08 on Thu 8 Dec and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2022/dattatreyotpatti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 7 Dec
Ahargaṇa, classicalDisc centre, no refractionWed 7 Dec
compat-drikpanchangComparison profileWed 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 7thCoveredSunset 8thCoveredRuled
Los Angeles18:32 → 20:0816:43112 min16:430 min7 Dec
Chicago20:32 → 22:0816:19118 min16:190 min7 Dec
Jersey City21:32 → 23:0816:28117 min16:280 min7 Dec
Port of Spain22:32 → 00:0817:43100 min17:430 min7 Dec
London02:32 → 04:0815:52128 min15:510 min7 Dec
Durban04:32 → 06:0818:4780 min18:480 min7 Dec
Dubai06:32 → 08:0817:29107 min17:290 min7 Dec
Delhi08:02 → 09:3817:24109 min17:240 min7 Dec
Kolkata08:02 → 09:3816:52106 min16:520 min7 Dec
Singapore10:32 → 12:0818:5796 min18:580 min7 Dec
Sydney13:32 → 15:0819:5678 min19:570 min7 Dec
Suva14:32 → 16:0818:3387 min18:330 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