Ruling · Vasanta Pañcamī (Basant Panchami) · 1972

Friday 21 January

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 2 min 37 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 Thursday 20 January

Pañcamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:05  12:53 madhyāhna ends
Pañcamī begins 12:55:43
11:1711:4112:0512:2912:5313:1713:41

0 of 48 minutes covered

Midday of Friday 21 January

Taken. Pañcamī reaches neither midday; the rule takes the second day.

madhyāhna begins 12:05  12:53 madhyāhna ends
11:1711:4112:0512:2912:5313:1713:41

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 12:56 on Thu 20 Jan to 10:52 on Fri 21 Jan.

    1972-01-20T04:55:44Z → 1972-01-21T02:51:52Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:05–12:53 on the 20th, 12:05–12:53 on the 21st.

    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 20th and 0 of 48 on the 21st.

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

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: unstated → second-day · margin 157 s < 300 s

  5. 05

    Ruling

    Vasanta Pañcamī, Baoding, 1972: Friday 21 January.

    confidence: boundary (margin)

Say it like this

In Baoding, Vasanta Pañcamī (Basant Panchami) 1972 falls on Friday 21 January. Pañcamī runs from 12:56 on Thu 20 Jan to 10:52 on Fri 21 Jan, and reaches madhyāhna on neither day. It is 2 min 37 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1972/vasanta-panchami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 21 Jan
Ahargaṇa, classicalDisc centre, no refractionFri 21 Jan
compat-drikpanchangComparison profileThu 20 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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles20:56 → 18:5211:4048 min11:400 min20 Jan
Chicago22:56 → 20:5211:3848 min11:380 min20 Jan
Jersey City23:56 → 21:5211:4348 min11:440 min20 Jan
Port of Spain00:56 → 22:5211:5348 min11:530 min20 Jan
London04:56 → 02:5211:4848 min11:480 min20 Jan
Durban06:56 → 04:5211:4348 min11:430 min20 Jan
Dubai08:56 → 06:5212:0648 min12:060 min20 Jan
Delhi10:26 → 08:2212:0848 min12:080 min20 Jan
Kolkata10:26 → 08:2211:2348 min11:240 min20 Jan
Singapore12:26 → 10:2212:2144 min12:220 min20 Jan
Sydney15:56 → 13:5212:420 min12:4248 min21 Jan
Suva16:56 → 14:5211:530 min11:5348 min21 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