Ruling · Vāmana Jayantī · 1998

Thursday 3 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 517 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Thursday 3 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

48 of 48 minutes covered

Midday of Friday 4 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

0 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 03:16 on Thu 3 Sep to 02:13 on Fri 4 Sep.

    1998-09-02T19:15:52Z → 1998-09-03T18:12:59Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 3rd, 11:53–12:41 on the 4th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 31048 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1998: Thursday 3 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1998 falls on Thursday 3 September. Dvādaśī runs from 03:16 on Thu 3 Sep to 02:13 on Fri 4 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1998/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 3 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 3 Sep
compat-drikpanchangComparison profileThu 3 Sep
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/vamana-jayanti · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Śukla · Dvādaśī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 103

“S 12 Visnuparivartanotsava, Sakrotthana (in any of the naksatras U. Asadha, Sravana & Dhanistha), Kalki dvadasi, Sravana dvadasi (when combined with naksatra Sravana), Vamana jayanti (madhyahna vyapini).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDvādaśīMadhyāhna 2ndCoveredMadhyāhna 3rdCoveredRuled
Los Angeles12:16 → 11:1312:2848 min12:280 min2 Sep
Chicago14:16 → 13:1312:260 min12:2647 min3 Sep
Jersey City15:16 → 14:1312:320 min12:3148 min3 Sep
Port of Spain15:16 → 14:1311:420 min11:4148 min3 Sep
London20:16 → 19:1312:360 min12:3548 min3 Sep
Durban21:16 → 20:1311:320 min11:3248 min3 Sep
Dubai23:16 → 22:1311:540 min11:5448 min3 Sep
Delhi00:46 → 23:4311:570 min11:5648 min3 Sep
Kolkata00:46 → 23:4311:120 min11:1248 min3 Sep
Singapore03:16 → 02:1312:400 min12:4048 min3 Sep
Sydney05:16 → 04:1311:310 min11:3148 min3 Sep
Suva07:16 → 06:1311:420 min11:4248 min3 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
vamana-jayanti@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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