Ruling · Govatsa Dvādaśī (Vasu Baras) · 1975

Friday 31 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 431 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 Friday 31 October

Taken. The only evening Dvādaśī reaches.

17:20 sunsetpradoṣa ends 19:07
16:5617:2017:4418:0818:3218:5619:20

107 of 107 minutes covered

Evening of Saturday 1 November

Dvādaśī is absent from pradoṣa. Not taken.

17:19 sunsetpradoṣa ends 19:06
16:5517:1917:4318:0718:3118:5519:19

0 of 108 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 10:08 on Fri 31 Oct to 06:59 on Sat 1 Nov.

    1975-10-31T02:08:22Z → 1975-10-31T22:58:32Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:20–19:07 on the 31st, 17:19–19:06 on the 1st.

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

  3. 03

    Rule

    Dvādaśī must be present during pradoṣa. It covers 107 of 107 minutes on the 31st and 0 of 108 on the 1st.

    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 25886 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 1975: Friday 31 October.

    confidence: determinate

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 1975 falls on Friday 31 October. Dvādaśī runs from 10:08 on Fri 31 Oct to 06:59 on Sat 1 Nov and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1975/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 31 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 31 Oct
compat-drikpanchangComparison profileFri 31 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 31stCoveredSunset 1stCoveredRuled
Los Angeles18:08 → 14:5917:010 min17:000 min30 Oct
Chicago20:08 → 16:5916:4712 min16:450 min31 Oct
Jersey City21:08 → 17:5916:5464 min16:530 min31 Oct
Port of Spain22:08 → 18:5917:4276 min17:420 min31 Oct
London02:08 → 22:5916:36114 min16:340 min31 Oct
Durban04:08 → 00:5918:1686 min18:170 min31 Oct
Dubai06:08 → 02:5917:39102 min17:380 min31 Oct
Delhi07:38 → 04:2917:37103 min17:360 min31 Oct
Kolkata07:38 → 04:2917:00101 min16:590 min31 Oct
Singapore09:38 → 06:2918:2095 min18:200 min31 Oct
Sydney13:08 → 09:5919:2185 min19:220 min31 Oct
Suva14:08 → 10:5918:1290 min18:120 min31 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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