Ruling · Dattātreyotpatti (Datta Jayanti) · 2033

Monday 5 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 28 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 Monday 5 December

Taken. The only evening Pūrṇimā reaches.

16:56 sunsetpradoṣa ends 18:51
Pūrṇimā begins 18:22:55
16:3216:5617:2017:4418:0818:3218:5619:20

28 of 116 minutes covered, the last 28

Evening of Tuesday 6 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

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

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 18:23 on Mon 5 Dec to 15:22 on Tue 6 Dec.

    2033-12-05T10:22:56Z → 2033-12-06T07:22:06Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 16:56–18:51 on the 5th, 16:56–18:51 on the 6th.

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

  3. 03

    Rule

    Pūrṇimā must be present during pradoṣa. It covers 28 of 116 minutes on the 5th and 0 of 116 on the 6th.

    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 1700 s

  5. 05

    Ruling

    Dattātreyotpatti, Baoding, 2033: Monday 5 December.

    confidence: determinate

Say it like this

In Baoding, Dattātreyotpatti (Datta Jayanti) 2033 falls on Monday 5 December. Pūrṇimā runs from 18:23 on Mon 5 Dec to 15:22 on Tue 6 Dec and covers 28 of 116 minutes of pradoṣa that evening.

ahargana.org/baoding/festivals/2033/dattatreyotpatti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 5 Dec
Ahargaṇa, classicalDisc centre, no refractionMon 5 Dec
compat-drikpanchangComparison profileMon 5 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 5thCoveredSunset 6thCoveredRuled
Los Angeles02:23 → 23:2216:43112 min16:430 min5 Dec
Chicago04:23 → 01:2216:19118 min16:190 min5 Dec
Jersey City05:23 → 02:2216:28117 min16:280 min5 Dec
Port of Spain06:23 → 03:2217:43100 min17:430 min5 Dec
London10:23 → 07:2215:52128 min15:520 min5 Dec
Durban12:23 → 09:2218:4680 min18:460 min5 Dec
Dubai14:23 → 11:2217:29107 min17:290 min5 Dec
Delhi15:53 → 12:5217:24109 min17:240 min5 Dec
Kolkata15:53 → 12:5216:51106 min16:520 min5 Dec
Singapore18:23 → 15:2218:5796 min18:570 min5 Dec
Sydney21:23 → 18:2219:540 min19:550 min5 Dec
Suva22:23 → 19:2218:320 min18:3250 min6 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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