Ruling · Śaṅkara Jayantī (Shankaracharya Jayanti) · 2005

Friday 13 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 497 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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 12 May

Pañcamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

0 of 48 minutes covered

Midday of Friday 13 May

Taken. The only midday Pañcamī reaches.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

48 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Pañcamī runs from 20:56 on Thu 12 May to 23:04 on Fri 13 May.

    2005-05-12T12:55:46Z → 2005-05-13T15:03:47Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 12th, 11:51–12:39 on the 13th.

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

  3. 03

    Rule

    Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 12th and 48 of 48 on the 13th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

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

    priority: unstated → only-day · margin 29820 s

  5. 05

    Ruling

    Śaṅkara Jayantī, Baoding, 2005: Friday 13 May.

    confidence: determinate

Say it like this

In Baoding, Śaṅkara Jayantī (Shankaracharya Jayanti) 2005 falls on Friday 13 May. Pañcamī runs from 20:56 on Thu 12 May to 23:04 on Fri 13 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2005/shankara-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 13 May
Ahargaṇa, classicalDisc centre, no refractionFri 13 May
compat-drikpanchangComparison profileFri 13 May
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/shankara-jayanti · ruleset 2026.3-draft

Month
Vaiśākha, amānta
Pakṣa · aṅga
Śukla · Pañcamī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 102

“S 5 Sankara jayanti.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePañcamīMadhyāhna 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles05:56 → 08:0412:2648 min12:260 min12 May
Chicago07:56 → 10:0412:2348 min12:230 min12 May
Jersey City08:56 → 11:0412:2948 min12:290 min12 May
Port of Spain08:56 → 11:0411:3848 min11:380 min12 May
London13:56 → 16:0412:330 min12:3348 min13 May
Durban14:56 → 17:0411:280 min11:2848 min13 May
Dubai16:56 → 19:0411:510 min11:5148 min13 May
Delhi18:26 → 20:3411:540 min11:5448 min13 May
Kolkata18:26 → 20:3411:090 min11:0948 min13 May
Singapore20:56 → 23:0412:370 min12:3748 min13 May
Sydney22:56 → 01:0411:270 min11:2748 min13 May
Suva00:56 → 03:0411:390 min11:3948 min13 May
Profile · tradition
pac-rp@2026.1 · smarta
Rule
shankara-jayanti@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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