Ruling · Śaṅkara Jayantī (Shankaracharya Jayanti) · 1980

Saturday 19 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 596 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 18 April

Pañcamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

0 of 48 minutes covered

Midday of Saturday 19 April

Taken. The only midday Pañcamī reaches.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

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 23:59 on Fri 18 Apr to 22:38 on Sat 19 Apr.

    1980-04-18T15:59:13Z → 1980-04-19T14:37:37Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 18th, 11:54–12:42 on the 19th.

    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 18th and 48 of 48 on the 19th.

    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 35760 s

  5. 05

    Ruling

    Śaṅkara Jayantī, Baoding, 1980: Saturday 19 April.

    confidence: determinate

Say it like this

In Baoding, Śaṅkara Jayantī (Shankaracharya Jayanti) 1980 falls on Saturday 19 April. Pañcamī runs from 23:59 on Fri 18 Apr to 22:38 on Sat 19 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1980/shankara-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 19 Apr
Ahargaṇa, classicalDisc centre, no refractionSat 19 Apr
compat-drikpanchangComparison profileSat 19 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 18thCoveredMadhyāhna 19thCoveredRuled
Los Angeles07:59 → 06:3811:2848 min11:280 min18 Apr
Chicago09:59 → 08:3811:2648 min11:260 min18 Apr
Jersey City10:59 → 09:3811:3248 min11:320 min18 Apr
Port of Spain11:59 → 10:3811:4130 min11:410 min18 Apr
London16:59 → 15:3812:360 min12:3648 min19 Apr
Durban17:59 → 16:3811:310 min11:3148 min19 Apr
Dubai19:59 → 18:3811:540 min11:5448 min19 Apr
Delhi21:29 → 20:0811:570 min11:5648 min19 Apr
Kolkata21:29 → 20:0811:120 min11:1248 min19 Apr
Singapore23:29 → 22:0812:100 min12:1048 min19 Apr
Sydney01:59 → 00:3811:300 min11:3048 min19 Apr
Suva03:59 → 02:3811:420 min11:4148 min19 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

About Ahargaṇa