Ruling · Govatsa Dvādaśī (Vasu Baras) · 1903

Saturday 17 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 590 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 Saturday 17 October

Taken. The only evening Dvādaśī reaches.

17:39 sunsetpradoṣa ends 19:22
17:1517:3918:0318:2718:5119:1519:39

103 of 103 minutes covered

Evening of Sunday 18 October

Dvādaśī is absent from pradoṣa. Not taken.

17:37 sunsetpradoṣa ends 19:21
17:1317:3718:0118:2518:4919:1319:37

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 07:49 on Sat 17 Oct to 05:27 on Sun 18 Oct.

    1903-10-16T23:48:53Z → 1903-10-17T21:26:45Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:39–19:22 on the 17th, 17:37–19:21 on the 18th.

    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 17th and 0 of 103 on the 18th.

    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 35402 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 1903: Saturday 17 October.

    confidence: determinate

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 1903 falls on Saturday 17 October. Dvādaśī runs from 07:49 on Sat 17 Oct to 05:27 on Sun 18 Oct and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1903/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 17 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 17 Oct
compat-drikpanchangComparison profileSat 17 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 16thCoveredSunset 17thCoveredRuled
Los Angeles15:49 → 13:2717:19101 min17:170 min16 Oct
Chicago17:49 → 15:2717:0963 min17:070 min16 Oct
Jersey City18:49 → 16:2717:1610 min17:140 min16 Oct
Port of Spain19:49 → 17:2717:480 min17:480 min16 Oct
London23:49 → 21:2717:070 min17:05107 min17 Oct
Durban01:49 → 23:2718:050 min18:0689 min17 Oct
Dubai03:30 → 01:0817:330 min17:32100 min17 Oct
Delhi05:10 → 02:4817:430 min17:42100 min17 Oct
Kolkata05:10 → 02:4817:020 min17:0299 min17 Oct
Singapore06:44 → 04:2217:480 min17:4895 min17 Oct
Sydney09:49 → 07:2718:080 min18:0988 min17 Oct
Suva11:44 → 09:2218:020 min18:0292 min17 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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