Ruling · Govatsa Dvādaśī (Vasu Baras) · 1909

Tuesday 9 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 331 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 8 November

Dvādaśī is absent from pradoṣa. Not taken.

17:11 sunsetpradoṣa ends 19:01
16:4717:1117:3517:5918:2318:4719:11

0 of 110 minutes covered

Evening of Tuesday 9 November

Taken. The only evening Dvādaśī reaches.

17:10 sunsetpradoṣa ends 19:00
16:4617:1017:3417:5818:2218:4619:10

110 of 110 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 00:32 on Tue 9 Nov to 03:07 on Wed 10 Nov.

    1909-11-08T16:32:10Z → 1909-11-09T19:07:24Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:11–19:01 on the 8th, 17:10–19:00 on the 9th.

    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 110 minutes on the 8th and 110 of 110 on the 9th.

    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 19881 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 1909: Tuesday 9 November.

    confidence: determinate

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 1909 falls on Tuesday 9 November. Dvādaśī runs from 00:32 on Tue 9 Nov to 03:07 on Wed 10 Nov and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1909/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 9 Nov
Ahargaṇa, classicalDisc centre, no refractionTue 9 Nov
compat-drikpanchangComparison profileTue 9 Nov
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 8thCoveredSunset 9thCoveredRuled
Los Angeles08:32 → 11:0716:54107 min16:530 min8 Nov
Chicago10:32 → 13:0716:37111 min16:360 min8 Nov
Jersey City11:32 → 14:0716:45111 min16:440 min8 Nov
Port of Spain12:32 → 15:0717:4099 min17:400 min8 Nov
London16:32 → 19:0716:22108 min16:21118 min8 Nov
Durban18:32 → 21:0718:2375 min18:2484 min8 Nov
Dubai20:13 → 22:4817:150 min17:15104 min9 Nov
Delhi22:02 → 00:3717:310 min17:31105 min9 Nov
Kolkata22:02 → 00:3716:560 min16:55103 min9 Nov
Singapore23:32 → 02:0717:500 min17:5096 min9 Nov
Sydney02:32 → 05:0718:290 min18:3082 min9 Nov
Suva04:27 → 07:0218:110 min18:1189 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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