Ruling · Śaṅkara Jayantī · 2078

Monday 16 May

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 1 min 34 s away. Say “contested”.

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 Sunday 15 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 Monday 16 May

Taken. The only midday Pañcamī reaches.

madhyāhna begins 11:51  12:39 madhyāhna ends
Pañcamī ends 12:40:38
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 14:12 on Sun 15 May to 12:41 on Mon 16 May.

    2078-05-15T06:11:53Z → 2078-05-16T04:40:39Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 15th, 11:51–12:39 on the 16th.

    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 15th and 48 of 48 on the 16th.

    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 94 s < 300 s

  5. 05

    Ruling

    Śaṅkara Jayantī, Baoding, 2078: Monday 16 May.

    confidence: boundary (margin)

Say it like this

In Baoding, Śaṅkara Jayantī 2078 falls on Monday 16 May. Pañcamī runs from 14:12 on Sun 15 May to 12:41 on Mon 16 May and covers all of madhyāhna that midday. It is 1 min 34 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2078/shankara-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 16 May
Ahargaṇa, classicalDisc centre, no refractionMon 16 May
compat-drikpanchangComparison profileMon 16 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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles23:12 → 21:4112:2648 min12:260 min15 May
Chicago01:12 → 23:4112:2448 min12:240 min15 May
Jersey City02:12 → 00:4112:2948 min12:290 min15 May
Port of Spain02:12 → 00:4111:3948 min11:390 min15 May
London07:12 → 05:4112:3448 min12:340 min15 May
Durban08:12 → 06:4111:2848 min11:280 min15 May
Dubai10:12 → 08:4111:5248 min11:520 min15 May
Delhi11:42 → 10:1111:5448 min11:540 min15 May
Kolkata11:42 → 10:1111:0915 min11:090 min15 May
Singapore14:12 → 12:4112:370 min12:373 min16 May
Sydney16:12 → 14:4111:280 min11:2848 min16 May
Suva18:12 → 16:4111:390 min11:3948 min16 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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