Ruling · Govatsa Dvādaśī (Vasu Baras) · 1957

Sunday 20 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 189 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 19 October

Dvādaśī is absent from pradoṣa. Not taken.

17:35 sunsetpradoṣa ends 19:18
17:1117:3517:5918:2318:4719:1119:35

0 of 104 minutes covered

Evening of Sunday 20 October

Taken. The only evening Dvādaśī reaches.

17:33 sunsetpradoṣa ends 19:17
17:0917:3317:5718:2118:4519:0919:33

104 of 104 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 01:36 on Sun 20 Oct to 22:26 on Sun 20 Oct.

    1957-10-19T17:35:30Z → 1957-10-20T14:26:28Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:35–19:18 on the 19th, 17:33–19:17 on the 20th.

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

  3. 03

    Rule

    Dvādaśī must be present during pradoṣa. It covers 0 of 104 minutes on the 19th and 104 of 104 on the 20th.

    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: purvaviddha → only-day · margin 11345 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 1957: Sunday 20 October.

    confidence: determinate

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 1957 falls on Sunday 20 October. Dvādaśī runs from 01:36 on Sun 20 Oct to 22:26 on Sun 20 Oct and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1957/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 20 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 20 Oct
compat-drikpanchangComparison profileSun 20 Oct
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/govatsa-dvadashi · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Kṛṣṇa · Dvādaśī
Kāla
Pradoṣa
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 104

“K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDvādaśīSunset 19thCoveredSunset 20thCoveredRuled
Los Angeles09:36 → 06:2617:14102 min17:130 min19 Oct
Chicago12:36 → 09:2618:03105 min18:010 min19 Oct
Jersey City13:36 → 10:2618:10104 min18:090 min19 Oct
Port of Spain13:36 → 10:2617:4797 min17:460 min19 Oct
London17:36 → 14:2616:5972 min16:570 min19 Oct
Durban19:36 → 16:2618:081 min18:090 min19 Oct
Dubai21:36 → 18:2617:480 min17:4739 min20 Oct
Delhi23:06 → 19:5617:480 min17:47101 min20 Oct
Kolkata23:06 → 19:5617:080 min17:07100 min20 Oct
Singapore01:06 → 21:5618:220 min18:2295 min20 Oct
Sydney03:36 → 00:2618:110 min18:1287 min20 Oct
Suva05:36 → 02:2618:080 min18:0891 min20 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
govatsa-dvadashi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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