Ruling · Vasanta Pañcamī (Basant Panchami) · 1966

Wednesday 26 January

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 1 min 36 s away. Say “contested”.

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 Wednesday 26 January

Taken. The only midday Pañcamī reaches.

madhyāhna begins 12:07  12:55 madhyāhna ends
11:1911:4312:0712:3112:5513:1913:43

48 of 48 minutes covered

Midday of Thursday 27 January

Pañcamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:07  12:55 madhyāhna ends
Pañcamī ends 12:05:26
11:1911:4312:0712:3112:5513:1913:43

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 09:48 on Wed 26 Jan to 12:05 on Thu 27 Jan.

    1966-01-26T01:48:05Z → 1966-01-27T04:05:27Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 26th, 12:07–12:55 on the 27th.

    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 26th and 0 of 48 on the 27th.

    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 96 s < 300 s

  5. 05

    Ruling

    Vasanta Pañcamī, Baoding, 1966: Wednesday 26 January.

    confidence: boundary (margin)

Say it like this

In Baoding, Vasanta Pañcamī (Basant Panchami) 1966 falls on Wednesday 26 January. Pañcamī runs from 09:48 on Wed 26 Jan to 12:05 on Thu 27 Jan and covers all of madhyāhna that midday. It is 1 min 36 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1966/vasanta-panchami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 26 Jan
Ahargaṇa, classicalDisc centre, no refractionWed 26 Jan
compat-drikpanchangComparison profileWed 26 Jan
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/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 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles17:48 → 20:0511:4248 min11:420 min26 Jan
Chicago19:48 → 22:0511:3948 min11:400 min26 Jan
Jersey City20:48 → 23:0511:4548 min11:450 min26 Jan
Port of Spain21:48 → 00:0511:5548 min11:550 min26 Jan
London01:48 → 04:0511:4948 min11:500 min26 Jan
Durban03:48 → 06:0511:4448 min11:440 min26 Jan
Dubai05:48 → 08:0512:0748 min12:080 min26 Jan
Delhi07:18 → 09:3512:1048 min12:100 min26 Jan
Kolkata07:18 → 09:3511:2548 min11:250 min26 Jan
Singapore09:18 → 11:3512:2348 min12:230 min26 Jan
Sydney11:48 → 14:0511:4343 min11:4448 min27 Jan
Suva13:48 → 16:0511:550 min11:5548 min27 Jan
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

About Ahargaṇa