Ruling · Śaṅkara Jayantī (Shankaracharya Jayanti) · 2018

Friday 20 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 615 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 Friday 20 April

Taken. The only midday Pañcamī reaches.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

48 of 48 minutes covered

Midday of Saturday 21 April

Pañcamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

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 01:38 on Fri 20 Apr to 23:16 on Fri 20 Apr.

    2018-04-19T17:38:07Z → 2018-04-20T15:15:52Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 20th, 11:53–12:41 on the 21st.

    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 20th and 0 of 48 on the 21st.

    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 36920 s

  5. 05

    Ruling

    Śaṅkara Jayantī, Baoding, 2018: Friday 20 April.

    confidence: determinate

Say it like this

In Baoding, Śaṅkara Jayantī (Shankaracharya Jayanti) 2018 falls on Friday 20 April. Pañcamī runs from 01:38 on Fri 20 Apr to 23:16 on Fri 20 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2018/shankara-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 20 Apr
Ahargaṇa, classicalDisc centre, no refractionFri 20 Apr
compat-drikpanchangComparison profileFri 20 Apr
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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles10:38 → 08:1612:2848 min12:280 min19 Apr
Chicago12:38 → 10:1612:2636 min12:260 min19 Apr
Jersey City13:38 → 11:1612:320 min12:320 min20 Apr
Port of Spain13:38 → 11:1611:410 min11:410 min20 Apr
London18:38 → 16:1612:360 min12:3648 min20 Apr
Durban19:38 → 17:1611:310 min11:3148 min20 Apr
Dubai21:38 → 19:1611:540 min11:5448 min20 Apr
Delhi23:08 → 20:4611:560 min11:5648 min20 Apr
Kolkata23:08 → 20:4611:120 min11:1248 min20 Apr
Singapore01:38 → 23:1612:400 min12:4048 min20 Apr
Sydney03:38 → 01:1611:300 min11:3048 min20 Apr
Suva05:38 → 03:1611:410 min11:4148 min20 Apr
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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