Ruling · Govatsa Dvādaśī (Vasu Baras) · 1979

Wednesday 17 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 371 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 Tuesday 16 October

Dvādaśī is absent from pradoṣa. Not taken.

17:40 sunsetpradoṣa ends 19:22
17:1617:4018:0418:2818:5219:1619:40

0 of 103 minutes covered

Evening of Wednesday 17 October

Taken. The only evening Dvādaśī reaches.

17:38 sunsetpradoṣa ends 19:21
17:1417:3818:0218:2618:5019:1419:38

103 of 103 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 01:33 on Wed 17 Oct to 04:13 on Thu 18 Oct.

    1979-10-16T17:32:49Z → 1979-10-17T20:12:37Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:40–19:22 on the 16th, 17:38–19:21 on the 17th.

    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 103 minutes on the 16th and 103 of 103 on the 17th.

    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 22245 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 1979: Wednesday 17 October.

    confidence: determinate

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 1979 falls on Wednesday 17 October. Dvādaśī runs from 01:33 on Wed 17 Oct to 04:13 on Thu 18 Oct and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1979/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 17 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 17 Oct
compat-drikpanchangComparison profileWed 17 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 16thCoveredSunset 17thCoveredRuled
Los Angeles10:33 → 13:1318:18102 min18:170 min16 Oct
Chicago12:33 → 15:1318:08104 min18:070 min16 Oct
Jersey City13:33 → 16:1318:15103 min18:140 min16 Oct
Port of Spain13:33 → 16:1317:4897 min17:480 min16 Oct
London18:33 → 21:1318:0680 min18:04107 min16 Oct
Durban19:33 → 22:1318:062 min18:0689 min16 Oct
Dubai21:33 → 00:1317:510 min17:50100 min17 Oct
Delhi23:03 → 01:4317:510 min17:50100 min17 Oct
Kolkata23:03 → 01:4317:110 min17:1099 min17 Oct
Singapore01:03 → 03:4318:230 min18:2295 min17 Oct
Sydney03:33 → 06:1318:080 min18:0988 min17 Oct
Suva05:33 → 08:1318:070 min18:0792 min17 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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