Ruling · Vasanta Pañcamī · 1921

Sunday 13 February

Determinatein Datong, under the Rashtriya Panchang method. Clear of every threshold by 119 minutes.

Decide it for

DatongDelhiKolkataSingaporeSydneyJersey City

40°06′ N 113°17′ E · Asia/Shanghai · GeoNames 2037799

The two middays

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

Midday of Saturday 12 February

Pañcamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:18  13:06 madhyāhna ends
11:3011:5412:1812:4213:0613:3013:54

0 of 48 minutes covered

Midday of Sunday 13 February

Taken. The only midday Pañcamī reaches.

madhyāhna begins 12:17  13:05 madhyāhna ends
11:2911:5312:1712:4113:0513:2913:53

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 15:04 on Sat 12 Feb to 15:43 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: 12:18–13:06 on the 12th, 12:17–13:05 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 0 of 48 minutes on the 12th and 48 of 48 on the 13th.

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

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 7119 s

  5. 05

    Ruling

    Vasanta Pañcamī, Datong, 1921: Sunday 13 February.

    confidence: determinate

Say it like this

In Datong, Vasanta Pañcamī 1921 falls on Sunday 13 February. Pañcamī runs from 15:04 on Sat 12 Feb to 15:43 on Sun 13 Feb and covers all of madhyāhna that midday.

ahargana.org/datong/festivals/1921/vasanta-panchami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 13 Feb
Ahargaṇa, classicalDisc centre, no refractionSun 13 Feb
compat-drikpanchangComparison profileSun 13 Feb
No institution has a recorded ruling for Datong.

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

The rule, as data

/rules/vasanta-panchami · ruleset 2026.3-draft

Month
Māgha, amānta
Pakṣa · aṅga
Śukla · Pañcamī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
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 min13 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
vasanta-panchami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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