Ruling · Govatsa Dvādaśī (Vasu Baras) · 1925

Wednesday 14 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 271 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two evenings

One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.

Evening of Tuesday 13 October

Dvādaśī is absent from pradoṣa. Not taken.

16:58 sunsetpradoṣa ends 18:42
16:3416:5817:2217:4618:1018:3418:58

0 of 104 minutes covered

Evening of Wednesday 14 October

Taken. The only evening Dvādaśī reaches.

16:57 sunsetpradoṣa ends 18:41
16:3316:5717:2117:4518:0918:3318:57

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 23:13 on Tue 13 Oct to 00:52 on Thu 15 Oct.

    1925-10-13T15:13:04Z → 1925-10-14T16:51:48Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 16:58–18:42 on the 13th, 16:57–18:41 on the 14th.

    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 13th and 104 of 104 on the 14th.

    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 16264 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Daqing, 1925: Wednesday 14 October.

    confidence: determinate

Say it like this

In Daqing, Govatsa Dvādaśī (Vasu Baras) 1925 falls on Wednesday 14 October. Dvādaśī runs from 23:13 on Tue 13 Oct to 00:52 on Thu 15 Oct and covers all of pradoṣa that evening.

ahargana.org/daqing/festivals/1925/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 14 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 14 Oct
compat-drikpanchangComparison profileWed 14 Oct
No institution has a recorded ruling for Daqing.

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 13thCoveredSunset 14thCoveredRuled
Los Angeles07:13 → 08:5217:22101 min17:200 min13 Oct
Chicago09:13 → 10:5217:13103 min17:110 min13 Oct
Jersey City10:13 → 11:5217:20102 min17:180 min13 Oct
Port of Spain11:13 → 12:5217:5097 min17:490 min13 Oct
London15:13 → 16:5217:12105 min17:100 min13 Oct
Durban17:13 → 18:5218:0490 min18:0447 min13 Oct
Dubai19:13 → 20:5217:5420 min17:5399 min13 Oct
Delhi20:43 → 22:2217:540 min17:53100 min14 Oct
Kolkata20:43 → 22:2217:130 min17:1399 min14 Oct
Singapore22:13 → 23:5217:530 min17:5395 min14 Oct
Sydney01:13 → 02:5218:060 min18:0789 min14 Oct
Suva03:13 → 04:5218:060 min18:0692 min14 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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