Ruling · Śrī Pañcamī · 1921

Saturday 12 February

Boundaryin Thāne, under the Rashtriya Panchang method. A threshold is only 3 min 30 s away. Say “contested”.

Decide it for

ThāneDelhiKolkataSingaporeSydneyJersey City

19°12′ N 72°58′ E · Asia/Kolkata · GeoNames 1254661

The two middays

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

Midday of Saturday 12 February

Taken. Both middays qualify; the rule takes the first.

madhyāhna begins 12:29  13:17 madhyāhna ends
Pañcamī begins 12:34:09
11:4112:0512:2912:5313:1713:4114:05

43 of 48 minutes covered, the last 43

Midday of Sunday 13 February

Qualifies with 45 of 48 minutes. Not taken.

madhyāhna begins 12:29  13:17 madhyāhna ends
Pañcamī ends 13:13:09
11:4112:0512:2912:5313:1713:4114:05

45 of 48 minutes covered, the first 45

Pañcamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pañcamī runs from 12:34 on Sat 12 Feb to 13:13 on Sun 13 Feb.

    1921-02-12T07:04:09Z → 1921-02-13T07:43:09Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 12th, 12:29–13:17 on the 13th.

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

  3. 03

    Rule

    Pañcamī must be present during madhyāhna. It covers 43 of 48 minutes on the 12th and 45 of 48 on the 13th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 210 s < 300 s

  5. 05

    Ruling

    Śrī Pañcamī, Thāne, 1921: Saturday 12 February.

    confidence: boundary (margin)

Say it like this

In Thāne, Śrī Pañcamī 1921 falls on Saturday 12 February. Pañcamī runs from 12:34 on Sat 12 Feb to 13:13 on Sun 13 Feb and covers 43 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 45 minutes; by the rule the first midday is taken. It is 3 min 30 s from a threshold: treat the date as contested.

ahargana.org/thane/festivals/1921/shri-panchami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 12 Feb
Ahargaṇa, classicalDisc centre, no refractionSat 12 Feb
compat-drikpanchangComparison profileSat 12 Feb
No institution has a recorded ruling for Thāne.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/shri-panchami · ruleset 2026.3-draft

Month
Māgha, amānta
Pakṣa · aṅga
Śukla · Pañcamī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 105

“S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePañcamīMadhyāhna 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles23:04 → 23:4311:4448 min11:440 min12 Feb
Chicago01:04 → 01:4311:4148 min11:410 min12 Feb
Jersey City02:04 → 02:4311:4748 min11:470 min12 Feb
Port of Spain03:04 → 03:4311:5748 min11:570 min12 Feb
London07:04 → 07:4311:5148 min11:510 min12 Feb
Durban09:04 → 09:4311:4648 min11:460 min12 Feb
Dubai11:04 → 11:4312:0948 min12:090 min12 Feb
Delhi12:34 → 13:1312:1225 min12:1248 min12 Feb
Kolkata12:34 → 13:1311:270 min11:2748 min13 Feb
Singapore14:04 → 14:4311:550 min11:5548 min13 Feb
Sydney17:04 → 17:4311:450 min11:4548 min13 Feb
Suva19:04 → 19:4311:570 min11:5748 min13 Feb
Profile · tradition
pac-rp@2026.1 · smarta
Rule
shri-panchami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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