Ruling · Govatsa Dvādaśī (Vasu Baras) · 1985

Saturday 9 November

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 274 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two evenings

One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.

Evening of Saturday 9 November

Taken. The only evening Dvādaśī reaches.

16:14 sunsetpradoṣa ends 18:09
15:5016:1416:3817:0217:2617:5018:1418:38

115 of 115 minutes covered

Evening of Sunday 10 November

Dvādaśī is absent from pradoṣa. Not taken.

16:13 sunsetpradoṣa ends 18:08
15:4916:1316:3717:0117:2517:4918:1318:37

0 of 115 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 11:40 on Sat 9 Nov to 08:54 on Sun 10 Nov.

    1985-11-09T03:39:59Z → 1985-11-10T00:53:42Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 16:14–18:09 on the 9th, 16:13–18:08 on the 10th.

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

  3. 03

    Rule

    Dvādaśī must be present during pradoṣa. It covers 115 of 115 minutes on the 9th and 0 of 115 on the 10th.

    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 16441 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Daqing, 1985: Saturday 9 November.

    confidence: determinate

Say it like this

In Daqing, Govatsa Dvādaśī (Vasu Baras) 1985 falls on Saturday 9 November. Dvādaśī runs from 11:40 on Sat 9 Nov to 08:54 on Sun 10 Nov and covers all of pradoṣa that evening.

ahargana.org/daqing/festivals/1985/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 9 Nov
Ahargaṇa, classicalDisc centre, no refractionSat 9 Nov
compat-drikpanchangComparison profileSat 9 Nov
No institution has a recorded ruling for Daqing.

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 9thCoveredSunset 10thCoveredRuled
Los Angeles19:40 → 16:5416:531 min16:520 min9 Nov
Chicago21:40 → 18:5416:35112 min16:340 min9 Nov
Jersey City22:40 → 19:5416:43111 min16:420 min9 Nov
Port of Spain23:40 → 20:5417:4099 min17:400 min9 Nov
London03:40 → 00:5416:20119 min16:180 min9 Nov
Durban05:40 → 02:5418:2484 min18:250 min9 Nov
Dubai07:40 → 04:5417:33104 min17:330 min9 Nov
Delhi09:10 → 06:2417:30105 min17:300 min9 Nov
Kolkata09:10 → 06:2416:55103 min16:540 min9 Nov
Singapore11:40 → 08:5418:5096 min18:500 min9 Nov
Sydney14:40 → 11:5419:3082 min19:310 min9 Nov
Suva15:40 → 12:5418:1689 min18:170 min9 Nov
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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