Ruling · Śaṅkara Jayantī · 1910

Friday 13 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 641 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 01:06 on Fri 13 May to 23:20 on Fri 13 May.

    1910-05-12T17:06:11Z → 1910-05-13T15:20:04Z

  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 38486 s

  5. 05

    Ruling

    Śaṅkara Jayantī, Baoding, 1910: Friday 13 May.

    confidence: determinate

Say it like this

In Baoding, Śaṅkara Jayantī 1910 falls on Friday 13 May. Pañcamī runs from 01:06 on Fri 13 May to 23:20 on Fri 13 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1910/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 Angeles09:06 → 07:2011:2548 min11:250 min12 May
Chicago11:06 → 09:2011:2348 min11:230 min12 May
Jersey City12:06 → 10:2011:2911 min11:290 min12 May
Port of Spain13:06 → 11:2011:380 min11:380 min13 May
London17:06 → 15:2011:330 min11:3348 min13 May
Durban19:06 → 17:2011:280 min11:2848 min13 May
Dubai20:47 → 19:0111:320 min11:3248 min13 May
Delhi22:36 → 20:5011:530 min11:5348 min13 May
Kolkata22:36 → 20:5011:090 min11:0948 min13 May
Singapore00:06 → 22:2011:370 min11:3748 min13 May
Sydney03:06 → 01:2011:270 min11:2748 min13 May
Suva05:01 → 03:1511:330 min11:3348 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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