Ruling · Govatsa Dvādaśī (Vasu Baras) · 1940

Sunday 27 October

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

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 Sunday 27 October

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

17:24 sunsetpradoṣa ends 19:10
17:0017:2417:4818:1218:3619:0019:24

0 of 106 minutes covered

Evening of Monday 28 October

Dvādaśī is absent from pradoṣa. Not taken.

17:23 sunsetpradoṣa ends 19:09
16:5917:2317:4718:1118:3518:5919:23

0 of 107 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 19:41 on Sun 27 Oct to 16:39 on Mon 28 Oct.

    1940-10-27T11:40:45Z → 1940-10-28T08:38:36Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:24–19:10 on the 27th, 17:23–19:09 on the 28th.

    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 106 minutes on the 27th and 0 of 107 on the 28th.

    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 1827 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 1940: Sunday 27 October.

    confidence: boundary (absent-unstated)

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 1940 falls on Sunday 27 October. Dvādaśī runs from 19:41 on Sun 27 Oct to 16:39 on Mon 28 Oct, and reaches pradoṣa on neither day.

ahargana.org/baoding/festivals/1940/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 27 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 27 Oct
compat-drikpanchangComparison profileSun 27 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 27thCoveredSunset 28thCoveredRuled
Los Angeles03:41 → 00:3917:05105 min17:040 min27 Oct
Chicago05:41 → 02:3916:51108 min16:500 min27 Oct
Jersey City06:41 → 03:3916:59107 min16:570 min27 Oct
Port of Spain07:41 → 04:3917:4398 min17:430 min27 Oct
London12:41 → 09:3917:43113 min17:410 min27 Oct
Durban13:41 → 10:3918:1487 min18:140 min27 Oct
Dubai15:41 → 12:3917:42102 min17:410 min27 Oct
Delhi17:11 → 14:0917:40103 min17:390 min27 Oct
Kolkata17:11 → 14:0917:0292 min17:020 min27 Oct
Singapore19:01 → 15:5918:1145 min18:100 min27 Oct
Sydney21:41 → 18:3918:180 min18:1920 min28 Oct
Suva23:41 → 20:3918:110 min18:1190 min28 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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