Ruling · Govatsa Dvādaśī (Vasu Baras) · 1980

Monday 3 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 22 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 3 November

Taken. Both evenings qualify; the rule takes the first.

17:16 sunsetpradoṣa ends 19:04
Dvādaśī begins 18:41:54
16:5217:1617:4018:0418:2818:5219:16

22 of 108 minutes covered, the last 22

Evening of Tuesday 4 November

Qualifies with 109 of 109 minutes. Not taken.

17:14 sunsetpradoṣa ends 19:03
16:5017:1417:3818:0218:2618:5019:14

109 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 18:42 on Mon 3 Nov to 21:15 on Tue 4 Nov.

    1980-11-03T10:41:54Z → 1980-11-04T13:15:21Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:16–19:04 on the 3rd, 17:14–19:03 on the 4th.

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

  3. 03

    Rule

    Dvādaśī must be present during pradoṣa. It covers 22 of 108 minutes on the 3rd and 109 of 109 on the 4th.

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

  4. 04

    Tie-break

    Both evenings qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 1322 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 1980: Monday 3 November.

    confidence: determinate

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 1980 falls on Monday 3 November. Dvādaśī runs from 18:42 on Mon 3 Nov to 21:15 on Tue 4 Nov and covers 22 of 108 minutes of pradoṣa that evening. It also reaches the next evening for 109 minutes; by the rule the first evening is taken.

ahargana.org/baoding/festivals/1980/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 3 Nov
Ahargaṇa, classicalDisc centre, no refractionMon 3 Nov
compat-drikpanchangComparison profileMon 3 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 3rdCoveredSunset 4thCoveredRuled
Los Angeles02:42 → 05:1516:58106 min16:570 min3 Nov
Chicago04:42 → 07:1516:42110 min16:410 min3 Nov
Jersey City05:42 → 08:1516:50109 min16:490 min3 Nov
Port of Spain06:42 → 09:1517:4198 min17:410 min3 Nov
London10:42 → 13:1516:29116 min16:280 min3 Nov
Durban12:42 → 15:1518:1985 min18:200 min3 Nov
Dubai14:42 → 17:1517:37103 min17:360 min3 Nov
Delhi16:12 → 18:4517:34104 min17:3472 min3 Nov
Kolkata16:12 → 18:4516:58102 min16:57102 min3 Nov
Singapore18:12 → 20:4518:2096 min18:2096 min3 Nov
Sydney21:42 → 00:1519:250 min19:2683 min4 Nov
Suva22:42 → 01:1518:140 min18:1490 min4 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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