Ruling · Śaṅkara Jayantī · 1913

Sunday 11 May

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 27 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

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

Midday of Saturday 10 May

Pañcamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:13  12:01 madhyāhna ends
10:2510:4911:1311:3712:0112:2512:49

0 of 48 minutes covered

Midday of Sunday 11 May

Taken. The only midday Pañcamī reaches.

madhyāhna begins 11:13  12:01 madhyāhna ends
Pañcamī ends 12:27:23
10:2510:4911:1311:3712:0112:2512:49

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 13:58 on Sat 10 May to 12:27 on Sun 11 May.

    1913-05-10T05:57:35Z → 1913-05-11T04:27:24Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 10th, 11:13–12:01 on the 11th.

    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 10th and 48 of 48 on the 11th.

    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 1603 s

  5. 05

    Ruling

    Śaṅkara Jayantī, Daqing, 1913: Sunday 11 May.

    confidence: determinate

Say it like this

In Daqing, Śaṅkara Jayantī 1913 falls on Sunday 11 May. Pañcamī runs from 13:58 on Sat 10 May to 12:27 on Sun 11 May and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1913/shankara-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 11 May
Ahargaṇa, classicalDisc centre, no refractionSun 11 May
compat-drikpanchangComparison profileSun 11 May
No institution has a recorded ruling for Daqing.

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 10thCoveredMadhyāhna 11thCoveredRuled
Los Angeles21:58 → 20:2711:2548 min11:250 min10 May
Chicago23:58 → 22:2711:2348 min11:230 min10 May
Jersey City00:58 → 23:2711:2948 min11:290 min10 May
Port of Spain01:58 → 00:2711:3848 min11:380 min10 May
London05:58 → 04:2711:3348 min11:330 min10 May
Durban07:58 → 06:2711:2848 min11:280 min10 May
Dubai09:39 → 08:0811:3248 min11:320 min10 May
Delhi11:28 → 09:5711:5448 min11:540 min10 May
Kolkata11:28 → 09:5711:0929 min11:090 min10 May
Singapore12:58 → 11:2711:370 min11:370 min11 May
Sydney15:58 → 14:2711:270 min11:2748 min11 May
Suva17:53 → 16:2211:340 min11:3348 min11 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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