Ruling · Govatsa Dvādaśī (Vasu Baras) · 1933

Sunday 15 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 30 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 Sunday 15 October

Taken. Both evenings qualify; the rule takes the first.

17:41 sunsetpradoṣa ends 19:23
Dvādaśī begins 18:11:11
17:1717:4118:0518:2918:5319:1719:41

72 of 102 minutes covered, the last 72

Evening of Monday 16 October

Qualifies with 30 of 103 minutes. Not taken.

17:39 sunsetpradoṣa ends 19:22
Dvādaśī ends 18:08:56
17:1517:3918:0318:2718:5119:1519:39

30 of 103 minutes covered, the first 30

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 18:11 on Sun 15 Oct to 18:09 on Mon 16 Oct.

    1933-10-15T10:11:12Z → 1933-10-16T10:08:56Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:41–19:23 on the 15th, 17:39–19:22 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 72 of 102 minutes on the 15th and 30 of 103 on the 16th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Both evenings qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 1779 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 1933: Sunday 15 October.

    confidence: determinate

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 1933 falls on Sunday 15 October. Dvādaśī runs from 18:11 on Sun 15 Oct to 18:09 on Mon 16 Oct and covers 72 of 102 minutes of pradoṣa that evening. It also reaches the next evening for 30 minutes; by the rule the first evening is taken.

ahargana.org/baoding/festivals/1933/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 15 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 15 Oct
compat-drikpanchangComparison profileSun 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 Angeles02:11 → 02:0917:19101 min17:180 min15 Oct
Chicago04:11 → 04:0917:09103 min17:080 min15 Oct
Jersey City05:11 → 05:0917:16103 min17:150 min15 Oct
Port of Spain06:11 → 06:0917:4997 min17:480 min15 Oct
London10:11 → 10:0917:08106 min17:060 min15 Oct
Durban12:11 → 12:0918:0590 min18:060 min15 Oct
Dubai14:11 → 14:0917:5299 min17:510 min15 Oct
Delhi15:41 → 15:3917:52100 min17:510 min15 Oct
Kolkata15:41 → 15:3917:1299 min17:110 min15 Oct
Singapore17:31 → 17:2918:1395 min18:130 min15 Oct
Sydney20:11 → 20:0918:080 min18:0889 min16 Oct
Suva22:11 → 22:0918:070 min18:0792 min16 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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