Ruling · Govatsa Dvādaśī (Vasu Baras) · 1900

Friday 19 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 217 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 19 October

Taken. The only evening Dvādaśī reaches.

17:40 sunsetpradoṣa ends 19:24
17:1617:4018:0418:2818:5219:1619:40

104 of 104 minutes covered

Evening of Saturday 20 October

Dvādaśī is absent from pradoṣa. Not taken.

17:39 sunsetpradoṣa ends 19:23
17:1517:3918:0318:2718:5119:1519:39

0 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 11:35 on Fri 19 Oct to 14:02 on Sat 20 Oct.

    1900-10-19T03:30:27Z → 1900-10-20T05:56:50Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:40–19:24 on the 19th, 17:39–19:23 on the 20th.

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

  3. 03

    Rule

    Dvādaśī must be present during pradoṣa. It covers 104 of 104 minutes on the 19th and 0 of 104 on the 20th.

    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 13010 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 1900: Friday 19 October.

    confidence: determinate

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 1900 falls on Friday 19 October. Dvādaśī runs from 11:35 on Fri 19 Oct to 14:02 on Sat 20 Oct and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1900/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 19 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 19 Oct
compat-drikpanchangComparison profileFri 19 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 19thCoveredSunset 20thCoveredRuled
Los Angeles19:30 → 21:5717:14102 min17:130 min19 Oct
Chicago21:30 → 23:5717:03105 min17:020 min19 Oct
Jersey City22:30 → 00:5717:10104 min17:090 min19 Oct
Port of Spain23:30 → 01:5717:4797 min17:460 min19 Oct
London03:30 → 05:5717:00108 min16:570 min19 Oct
Durban05:00 → 07:2717:3889 min17:380 min19 Oct
Dubai07:11 → 09:3817:30100 min17:290 min19 Oct
Delhi08:51 → 11:1817:39101 min17:380 min19 Oct
Kolkata08:51 → 11:1816:59100 min16:590 min19 Oct
Singapore10:25 → 12:5217:4795 min17:470 min19 Oct
Sydney13:30 → 15:5718:1188 min18:120 min19 Oct
Suva15:25 → 17:5218:0392 min18:030 min19 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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