Ruling · Śaṅkara Jayantī (Shankaracharya Jayanti) · 2025

Thursday 1 May

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 36 minutes.

Decide it for

UjjainDelhiKolkataSingaporeSydneyJersey City

23°11′ N 75°47′ E · Asia/Kolkata · GeoNames 1253914

The two middays

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

Midday of Thursday 1 May

Taken. The only midday Pañcamī reaches.

madhyāhna begins 12:00  12:48 madhyāhna ends
Pañcamī begins 11:24:07
11:1211:3612:0012:2412:4813:1213:36

48 of 48 minutes covered

Midday of Friday 2 May

Pañcamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

0 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 11:24 on Thu 1 May to 09:15 on Fri 2 May.

    2025-05-01T05:54:07Z → 2025-05-02T03:45:12Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 1st, 12:00–12:48 on the 2nd.

    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 1st and 0 of 48 on the 2nd.

    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 2160 s

  5. 05

    Ruling

    Śaṅkara Jayantī, Ujjain, 2025: Thursday 1 May.

    confidence: determinate

Say it like this

In Ujjain, Śaṅkara Jayantī (Shankaracharya Jayanti) 2025 falls on Thursday 1 May. Pañcamī runs from 11:24 on Thu 1 May to 09:15 on Fri 2 May and covers all of madhyāhna that midday. Rashtriya Panchang recorded 2 May (Principal festivals, 2025-26).

ahargana.org/ujjain/festivals/2025/shankara-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 1 May
Ahargaṇa, classicalDisc centre, no refractionThu 1 May
compat-drikpanchangComparison profileThu 1 May
Rashtriya PanchangPrincipal festivals, 2025-26Fri 2 May

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 1stCoveredMadhyāhna 2ndCoveredRuled
Los Angeles22:54 → 20:4512:2648 min12:260 min1 May
Chicago00:54 → 22:4512:2448 min12:240 min1 May
Jersey City01:54 → 23:4512:3048 min12:300 min1 May
Port of Spain01:54 → 23:4511:3948 min11:390 min1 May
London06:54 → 04:4512:3448 min12:340 min1 May
Durban07:54 → 05:4511:2948 min11:290 min1 May
Dubai09:54 → 07:4511:5248 min11:520 min1 May
Delhi11:24 → 09:1511:5448 min11:540 min1 May
Kolkata11:24 → 09:1511:1034 min11:100 min1 May
Singapore13:54 → 11:4512:380 min12:380 min2 May
Sydney15:54 → 13:4511:280 min11:2848 min2 May
Suva17:54 → 15:4511:390 min11:3948 min2 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