Ruling · Govatsa Dvādaśī (Vasu Baras) · 2078

Monday 31 October

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

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

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

108 of 108 minutes covered

Evening of Tuesday 1 November

Qualifies with 31 of 108 minutes. Not taken.

17:18 sunsetpradoṣa ends 19:05
Dvādaśī ends 17:48:18
16:5417:1817:4218:0618:3018:5419:18

31 of 108 minutes covered, the first 31

Dvādaśī presentPradoṣa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 16:06 on Mon 31 Oct to 17:48 on Tue 1 Nov.

    2078-10-31T08:05:31Z → 2078-11-01T09:48:18Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:19–19:06 on the 31st, 17:18–19:05 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 108 of 108 minutes on the 31st and 31 of 108 on the 1st.

    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 1842 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 2078: Monday 31 October.

    confidence: determinate

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 2078 falls on Monday 31 October. Dvādaśī runs from 16:06 on Mon 31 Oct to 17:48 on Tue 1 Nov and covers all of pradoṣa that evening. It also reaches the next evening for 31 minutes; by the rule the first evening is taken.

ahargana.org/baoding/festivals/2078/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 31 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 31 Oct
compat-drikpanchangComparison profileMon 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 Angeles01:06 → 02:4818:00106 min17:590 min31 Oct
Chicago03:06 → 04:4817:45109 min17:440 min31 Oct
Jersey City04:06 → 05:4817:53109 min17:520 min31 Oct
Port of Spain04:06 → 05:4817:4298 min17:420 min31 Oct
London08:06 → 09:4816:34115 min16:330 min31 Oct
Durban10:06 → 11:4818:1786 min18:180 min31 Oct
Dubai12:06 → 13:4817:39102 min17:380 min31 Oct
Delhi13:36 → 15:1817:36104 min17:360 min31 Oct
Kolkata13:36 → 15:1816:59102 min16:590 min31 Oct
Singapore16:06 → 17:4818:5095 min18:500 min31 Oct
Sydney19:06 → 20:4819:2284 min19:2384 min31 Oct
Suva20:06 → 21:4818:130 min18:1390 min1 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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