Ruling · Govatsa Dvādaśī (Vasu Baras) · 1965

Thursday 21 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 542 minutes.

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 Wednesday 20 October

Dvādaśī is absent from pradoṣa. Not taken.

17:33 sunsetpradoṣa ends 19:17
17:0917:3317:5718:2118:4519:0919:33

0 of 104 minutes covered

Evening of Thursday 21 October

Taken. The only evening Dvādaśī reaches.

17:32 sunsetpradoṣa ends 19:16
17:0817:3217:5618:2018:4419:0819:32

104 of 104 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 06:47 on Thu 21 Oct to 04:18 on Fri 22 Oct.

    1965-10-20T22:46:45Z → 1965-10-21T20:18:25Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:33–19:17 on the 20th, 17:32–19:16 on the 21st.

    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 104 minutes on the 20th and 104 of 104 on the 21st.

    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 32529 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 1965: Thursday 21 October.

    confidence: determinate

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 1965 falls on Thursday 21 October. Dvādaśī runs from 06:47 on Thu 21 Oct to 04:18 on Fri 22 Oct and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1965/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 21 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 21 Oct
compat-drikpanchangComparison profileThu 21 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 20thCoveredSunset 21stCoveredRuled
Los Angeles15:47 → 13:1818:13103 min18:110 min20 Oct
Chicago17:47 → 15:1818:01105 min18:000 min20 Oct
Jersey City18:47 → 16:1818:0967 min18:070 min20 Oct
Port of Spain18:47 → 16:1817:4637 min17:460 min20 Oct
London23:47 → 21:1817:570 min17:55110 min21 Oct
Durban00:47 → 22:1818:090 min18:0988 min21 Oct
Dubai02:47 → 00:1817:470 min17:47101 min21 Oct
Delhi04:17 → 01:4817:470 min17:46101 min21 Oct
Kolkata04:17 → 01:4817:070 min17:07100 min21 Oct
Singapore06:17 → 03:4818:220 min18:2195 min21 Oct
Sydney08:47 → 06:1818:120 min18:1387 min21 Oct
Suva10:47 → 08:1818:080 min18:0891 min21 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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