Ruling · Vasanta Pañcamī · 1925

Thursday 29 January

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 6 min 23 s.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

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

Midday of Wednesday 28 January

Pañcamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:29  12:17 madhyāhna ends
Pañcamī begins 12:32:38
10:4111:0511:2911:5312:1712:4113:05

0 of 48 minutes covered

Midday of Thursday 29 January

Taken. The only midday Pañcamī reaches.

madhyāhna begins 11:29  12:17 madhyāhna ends
Pañcamī ends 11:35:49
10:4111:0511:2911:5312:1712:4113:05

6 of 48 minutes covered, the first 6

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

How it was decided

  1. 01

    Aṅga

    Pañcamī runs from 12:33 on Wed 28 Jan to 11:36 on Thu 29 Jan.

    1925-01-28T04:32:38Z → 1925-01-29T03:35:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 28th, 11:29–12:17 on the 29th.

    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 28th and 6 of 48 on the 29th.

    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 383 s

  5. 05

    Ruling

    Vasanta Pañcamī, Daqing, 1925: Thursday 29 January.

    confidence: determinate

Say it like this

In Daqing, Vasanta Pañcamī 1925 falls on Thursday 29 January. Pañcamī runs from 12:33 on Wed 28 Jan to 11:36 on Thu 29 Jan and covers 6 of 48 minutes of madhyāhna that midday.

ahargana.org/daqing/festivals/1925/vasanta-panchami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 29 Jan
Ahargaṇa, classicalDisc centre, no refractionThu 29 Jan
compat-drikpanchangComparison profileThu 29 Jan
No institution has a recorded ruling for Daqing.

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 28thCoveredMadhyāhna 29thCoveredRuled
Los Angeles20:33 → 19:3611:4248 min11:420 min28 Jan
Chicago22:33 → 21:3611:4048 min11:400 min28 Jan
Jersey City23:33 → 22:3611:4648 min11:460 min28 Jan
Port of Spain00:33 → 23:3611:5548 min11:550 min28 Jan
London04:33 → 03:3611:5048 min11:500 min28 Jan
Durban06:33 → 05:3611:4548 min11:450 min28 Jan
Dubai08:33 → 07:3612:0848 min12:080 min28 Jan
Delhi10:03 → 09:0612:1048 min12:100 min28 Jan
Kolkata10:03 → 09:0611:2648 min11:260 min28 Jan
Singapore11:33 → 10:3611:5448 min11:540 min28 Jan
Sydney14:33 → 13:3611:440 min11:4448 min29 Jan
Suva16:33 → 15:3611:550 min11:5548 min29 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

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