Ruling · Govatsa Dvādaśī (Vasu Baras) · 1960

Monday 17 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 78 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 16 October

Dvādaśī is absent from pradoṣa. Not taken.

17:39 sunsetpradoṣa ends 19:21
17:1517:3918:0318:2718:5119:1519:39

0 of 103 minutes covered

Evening of Monday 17 October

Taken. The only evening Dvādaśī reaches.

17:37 sunsetpradoṣa ends 19:20
17:1317:3718:0118:2518:4919:1319:37

103 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 20:40 on Sun 16 Oct to 21:32 on Mon 17 Oct.

    1960-10-16T12:39:47Z → 1960-10-17T13:32:00Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:39–19:21 on the 16th, 17:37–19:20 on the 17th.

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

  3. 03

    Rule

    Dvādaśī must be present during pradoṣa. It covers 0 of 103 minutes on the 16th and 103 of 103 on the 17th.

    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 4704 s

  5. 05

    Ruling

    Govatsa Dvādaśī, Baoding, 1960: Monday 17 October.

    confidence: determinate

Say it like this

In Baoding, Govatsa Dvādaśī (Vasu Baras) 1960 falls on Monday 17 October. Dvādaśī runs from 20:40 on Sun 16 Oct to 21:32 on Mon 17 Oct and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1960/govatsa-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 17 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 17 Oct
compat-drikpanchangComparison profileMon 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 Angeles04:40 → 05:3217:17102 min17:160 min16 Oct
Chicago07:40 → 08:3218:07104 min18:060 min16 Oct
Jersey City08:40 → 09:3218:14103 min18:130 min16 Oct
Port of Spain08:40 → 09:3217:4897 min17:470 min16 Oct
London12:40 → 13:3217:05107 min17:030 min16 Oct
Durban14:40 → 15:3218:0689 min18:070 min16 Oct
Dubai16:40 → 17:3217:51100 min17:500 min16 Oct
Delhi18:10 → 19:0217:5081 min17:4973 min16 Oct
Kolkata18:10 → 19:0217:1040 min17:1099 min16 Oct
Singapore20:10 → 21:0218:230 min18:2295 min17 Oct
Sydney22:40 → 23:3218:090 min18:1088 min17 Oct
Suva00:40 → 01:3218:070 min18:0792 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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