Ruling · Vasanta Pañcamī (Basant Panchami) · 2000

Thursday 10 February

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 620 minutes.

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 9 February

Pañcamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:30  12:18 madhyāhna ends
10:4211:0611:3011:5412:1812:4213:06

0 of 48 minutes covered

Midday of Thursday 10 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

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

How it was decided

  1. 01

    Aṅga

    Pañcamī runs from 23:14 on Wed 9 Feb to 22:39 on Thu 10 Feb.

    2000-02-09T15:14:02Z → 2000-02-10T14:38:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 9th, 11:31–12:19 on the 10th.

    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 9th and 48 of 48 on the 10th.

    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 37205 s

  5. 05

    Ruling

    Vasanta Pañcamī, Daqing, 2000: Thursday 10 February.

    confidence: determinate

Say it like this

In Daqing, Vasanta Pañcamī (Basant Panchami) 2000 falls on Thursday 10 February. Pañcamī runs from 23:14 on Wed 9 Feb to 22:39 on Thu 10 Feb and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2000/vasanta-panchami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 10 Feb
Ahargaṇa, classicalDisc centre, no refractionThu 10 Feb
compat-drikpanchangComparison profileThu 10 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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles07:14 → 06:3911:4348 min11:430 min9 Feb
Chicago09:14 → 08:3911:4148 min11:410 min9 Feb
Jersey City10:14 → 09:3911:4748 min11:470 min9 Feb
Port of Spain11:14 → 10:3911:5648 min11:560 min9 Feb
London15:14 → 14:3911:510 min11:5148 min10 Feb
Durban17:14 → 16:3911:460 min11:4648 min10 Feb
Dubai19:14 → 18:3912:090 min12:0948 min10 Feb
Delhi20:44 → 20:0912:110 min12:1148 min10 Feb
Kolkata20:44 → 20:0911:270 min11:2748 min10 Feb
Singapore23:14 → 22:3912:550 min12:5548 min10 Feb
Sydney02:14 → 01:3912:450 min12:4548 min10 Feb
Suva04:14 → 03:3912:560 min12:5648 min10 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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