Ruling · Vasanta Pañcamī · 1997

Tuesday 11 February

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 117 minutes.

Decide it for

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 Tuesday 11 February

Taken. The only midday Pañcamī reaches.

madhyāhna begins 11:31  12:19 madhyāhna ends
10:4311:0711:3111:5512:1912:4313:07

48 of 48 minutes covered

Midday of Wednesday 12 February

Pañcamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:31  12:19 madhyāhna ends
10:4311:0711:3111:5512:1912:4313:07

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 09:34 on Tue 11 Feb to 07:22 on Wed 12 Feb.

    1997-02-11T01:34:02Z → 1997-02-11T23:21:43Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 11th, 11:31–12:19 on the 12th.

    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 11th and 0 of 48 on the 12th.

    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 6993 s

  5. 05

    Ruling

    Vasanta Pañcamī, Daqing, 1997: Tuesday 11 February.

    confidence: determinate

Say it like this

In Daqing, Vasanta Pañcamī 1997 falls on Tuesday 11 February. Pañcamī runs from 09:34 on Tue 11 Feb to 07:22 on Wed 12 Feb and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1997/vasanta-panchami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 11 Feb
Ahargaṇa, classicalDisc centre, no refractionTue 11 Feb
compat-drikpanchangComparison profileTue 11 Feb
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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles17:34 → 15:2211:4348 min11:430 min11 Feb
Chicago19:34 → 17:2211:4148 min11:410 min11 Feb
Jersey City20:34 → 18:2211:4748 min11:470 min11 Feb
Port of Spain21:34 → 19:2211:5648 min11:560 min11 Feb
London01:34 → 23:2211:5148 min11:510 min11 Feb
Durban03:34 → 01:2211:4648 min11:460 min11 Feb
Dubai05:34 → 03:2212:0948 min12:090 min11 Feb
Delhi07:04 → 04:5212:1248 min12:120 min11 Feb
Kolkata07:04 → 04:5211:2748 min11:270 min11 Feb
Singapore09:34 → 07:2212:5548 min12:550 min11 Feb
Sydney12:34 → 10:2212:4548 min12:450 min11 Feb
Suva13:34 → 11:2211:560 min11:560 min12 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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