Ruling · Govatsa Dvādaśī (Vasu Baras) · 2066

Friday 15 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 301 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 15 October

Taken. The only evening Dvādaśī reaches.

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

103 of 103 minutes covered

Evening of Saturday 16 October

Dvādaśī is absent from pradoṣa. Not taken.

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

0 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 12:14 on Fri 15 Oct to 12:37 on Sat 16 Oct.

    2066-10-15T04:14:30Z → 2066-10-16T04:37:29Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:40–19:22 on the 15th, 17:38–19:21 on the 16th.

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

  3. 03

    Rule

    Dvādaśī must be present during pradoṣa. It covers 103 of 103 minutes on the 15th and 0 of 103 on the 16th.

    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 18050 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 2066: Friday 15 October.

    confidence: determinate

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 2066 falls on Friday 15 October. Dvādaśī runs from 12:14 on Fri 15 Oct to 12:37 on Sat 16 Oct and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2066/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 15 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 15 Oct
compat-drikpanchangComparison profileFri 15 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 15thCoveredSunset 16thCoveredRuled
Los Angeles21:14 → 21:3718:18102 min18:170 min15 Oct
Chicago23:14 → 23:3718:08104 min18:070 min15 Oct
Jersey City00:14 → 00:3718:15103 min18:140 min15 Oct
Port of Spain00:14 → 00:3717:4897 min17:480 min15 Oct
London05:14 → 05:3718:06107 min18:040 min15 Oct
Durban06:14 → 06:3718:0690 min18:060 min15 Oct
Dubai08:14 → 08:3717:52100 min17:510 min15 Oct
Delhi09:44 → 10:0717:51100 min17:500 min15 Oct
Kolkata09:44 → 10:0717:1199 min17:100 min15 Oct
Singapore12:14 → 12:3718:5395 min18:530 min15 Oct
Sydney15:14 → 15:3719:0889 min19:090 min15 Oct
Suva16:14 → 16:3718:0792 min18:070 min15 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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