Ruling · Vasanta Pañcamī · 1931

Friday 23 January

Boundaryin Baoding, under the Rashtriya Panchang method. Both middays qualify and the rule does not say which to take. 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 Friday 23 January

Taken. Both middays qualify; the rule is silent, and this one is covered longer.

madhyāhna begins 12:06  12:54 madhyāhna ends
Pañcamī begins 11:55:51
11:1811:4212:0612:3012:5413:1813:42

48 of 48 minutes covered

Midday of Saturday 24 January

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 12:06  12:54 madhyāhna ends
11:1811:4212:0612:3012:5413:1813:42

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 11:56 on Fri 23 Jan to 14:40 on Sat 24 Jan.

    1931-01-23T03:55:52Z → 1931-01-24T06:40:01Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:06–12:54 on the 23rd, 12:06–12:54 on the 24th.

    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 23rd and 48 of 48 on the 24th.

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

  4. 04

    Tie-break

    Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 611 s

  5. 05

    Ruling

    Vasanta Pañcamī, Baoding, 1931: Friday 23 January.

    confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Vasanta Pañcamī 1931 falls on Friday 23 January. Pañcamī runs from 11:56 on Fri 23 Jan to 14:40 on Sat 24 Jan and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/baoding/festivals/1931/vasanta-panchami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 23 Jan
Ahargaṇa, classicalDisc centre, no refractionFri 23 Jan
compat-drikpanchangComparison profileSat 24 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 23rdCoveredMadhyāhna 24thCoveredRuled
Los Angeles19:56 → 22:4011:4148 min11:410 min23 Jan
Chicago21:56 → 00:4011:3948 min11:390 min23 Jan
Jersey City22:56 → 01:4011:4448 min11:450 min23 Jan
Port of Spain23:56 → 02:4011:5448 min11:540 min23 Jan
London03:56 → 06:4011:4948 min11:490 min23 Jan
Durban05:56 → 08:4011:4348 min11:440 min23 Jan
Dubai07:56 → 10:4012:0748 min12:070 min23 Jan
Delhi09:26 → 12:1012:0948 min12:091 min23 Jan
Kolkata09:26 → 12:1011:2448 min11:2545 min23 Jan
Singapore10:56 → 13:4011:5248 min11:5348 min23 Jan
Sydney13:56 → 16:4011:430 min11:4348 min24 Jan
Suva15:56 → 18:4011:540 min11:5448 min24 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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