Ruling · Govatsa Dvādaśī (Vasu Baras) · 1931

Friday 6 November

Boundaryin Baoding, under the Rashtriya Panchang method. Dvādaśī reaches pradoṣa on neither day and the rule does not say what then. Say “contested”.

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 Friday 6 November

Taken. Dvādaśī reaches neither evening; this is the day it falls on.

17:14 sunsetpradoṣa ends 19:02
16:5017:1417:3818:0218:2618:5019:14

0 of 109 minutes covered

Evening of Saturday 7 November

Dvādaśī is absent from pradoṣa. Not taken.

17:13 sunsetpradoṣa ends 19:02
Dvādaśī ends 17:00:39
16:4917:1317:3718:0118:2518:4919:13

0 of 109 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 20:04 on Fri 6 Nov to 17:01 on Sat 7 Nov.

    1931-11-06T12:03:32Z → 1931-11-07T09:00:39Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:14–19:02 on the 6th, 17:13–19:02 on the 7th.

    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 109 minutes on the 6th and 0 of 109 on the 7th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Neither evening qualifies. The day the tithi falls on is taken.

    priority: purvaviddha → tithi-day · margin 711 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 1931: Friday 6 November.

    confidence: boundary (absent-unstated)

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 1931 falls on Friday 6 November. Dvādaśī runs from 20:04 on Fri 6 Nov to 17:01 on Sat 7 Nov, and reaches pradoṣa on neither day.

ahargana.org/baoding/festivals/1931/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 6 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 6 Nov
compat-drikpanchangComparison profileFri 6 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 6thCoveredSunset 7thCoveredRuled
Los Angeles04:04 → 01:0116:56107 min16:550 min6 Nov
Chicago06:04 → 03:0116:40111 min16:380 min6 Nov
Jersey City07:04 → 04:0116:48110 min16:470 min6 Nov
Port of Spain08:04 → 05:0117:4198 min17:410 min6 Nov
London12:04 → 09:0116:26117 min16:240 min6 Nov
Durban14:04 → 11:0118:2185 min18:220 min6 Nov
Dubai16:04 → 13:0117:36103 min17:350 min6 Nov
Delhi17:34 → 14:3117:33104 min17:320 min6 Nov
Kolkata17:34 → 14:3116:5766 min16:560 min6 Nov
Singapore19:04 → 16:0117:5022 min17:500 min6 Nov
Sydney22:04 → 19:0118:260 min18:2733 min7 Nov
Suva00:04 → 21:0118:150 min18:1589 min7 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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