Ruling · Śaṅkara Jayantī · 2057

Tuesday 8 May

Boundaryin Baoding, under the Rashtriya Panchang method. Both middays qualify and the rule does not say which to take. 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 Tuesday 8 May

Taken. Both middays qualify; the rule is silent, and this one is covered longer.

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

48 of 48 minutes covered

Midday of Wednesday 9 May

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:51  12:39 madhyāhna ends
Pañcamī ends 12:45:36
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 10:15 on Tue 8 May to 12:46 on Wed 9 May.

    2057-05-08T02:14:31Z → 2057-05-09T04:45:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 8th, 11:51–12:39 on the 9th.

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

  3. 03

    Rule

    Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 8th and 48 of 48 on the 9th.

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

  4. 04

    Tie-break

    Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 395 s

  5. 05

    Ruling

    Śaṅkara Jayantī, Baoding, 2057: Tuesday 8 May.

    confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Śaṅkara Jayantī 2057 falls on Tuesday 8 May. Pañcamī runs from 10:15 on Tue 8 May to 12:46 on Wed 9 May and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/baoding/festivals/2057/shankara-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 8 May
Ahargaṇa, classicalDisc centre, no refractionTue 8 May
compat-drikpanchangComparison profileTue 8 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 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles19:15 → 21:4612:2648 min12:260 min8 May
Chicago21:15 → 23:4612:2448 min12:230 min8 May
Jersey City22:15 → 00:4612:2948 min12:290 min8 May
Port of Spain22:15 → 00:4611:3948 min11:390 min8 May
London03:15 → 05:4612:3448 min12:340 min8 May
Durban04:15 → 06:4611:2848 min11:280 min8 May
Dubai06:15 → 08:4611:5248 min11:510 min8 May
Delhi07:45 → 10:1611:5448 min11:540 min8 May
Kolkata07:45 → 10:1611:0948 min11:090 min8 May
Singapore10:15 → 12:4612:3748 min12:378 min8 May
Sydney12:15 → 14:4611:281 min11:2848 min9 May
Suva14:15 → 16:4611:390 min11:3948 min9 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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