Ruling · Govatsa Dvādaśī (Vasu Baras) · 1971

Friday 15 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 555 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 Friday 15 October

Taken. The only evening Dvādaśī reaches.

17:41 sunsetpradoṣa ends 19:23
17:1717:4118:0518:2918:5319:1719:41

102 of 102 minutes covered

Evening of Saturday 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

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 06:04 on Fri 15 Oct to 08:25 on Sat 16 Oct.

    1971-10-14T22:03:59Z → 1971-10-16T00:24:47Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:41–19:23 on the 15th, 17:40–19:22 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 102 of 102 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 33287 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 1971: Friday 15 October.

    confidence: determinate

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 1971 falls on Friday 15 October. Dvādaśī runs from 06:04 on Fri 15 Oct to 08:25 on Sat 16 Oct and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1971/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 14thCoveredSunset 16thCoveredRuled
Los Angeles15:04 → 17:2518:20101 min18:180 min14 Oct
Chicago17:04 → 19:2518:11103 min18:080 min14 Oct
Jersey City18:04 → 20:2518:18103 min18:150 min14 Oct
Port of Spain18:04 → 20:2517:4982 min17:480 min14 Oct
London23:04 → 01:2518:110 min18:060 min15 Oct
Durban00:04 → 02:2518:040 min18:060 min15 Oct
Dubai02:04 → 04:2517:530 min17:510 min15 Oct
Delhi03:34 → 05:5517:530 min17:510 min15 Oct
Kolkata03:34 → 05:5517:130 min17:110 min15 Oct
Singapore05:34 → 07:5518:230 min18:230 min15 Oct
Sydney08:04 → 10:2518:070 min18:080 min15 Oct
Suva10:04 → 12:2518:060 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

About Ahargaṇa