Ruling · Ṛṣi Pañcamī · 1902

Saturday 6 September

Boundaryin Baoding, under the Rashtriya Panchang method. Both middays qualify and the authorities the rule cites disagree. Say “contested”.

Decide it for

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 Saturday 6 September

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

madhyāhna begins 11:52  12:40 madhyāhna ends
Pañcamī begins 11:35:08
11:0411:2811:5212:1612:4013:0413:28

48 of 48 minutes covered

Midday of Sunday 7 September

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:52  12:40 madhyāhna ends
Pañcamī ends 12:52:46
11:0411:2811:5212:1612:4013:0413:28

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 11:35 on Sat 6 Sep to 12:53 on Sun 7 Sep.

    1902-09-06T03:35:08Z → 1902-09-07T04:52:46Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 6th, 11:52–12:40 on the 7th.

    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 6th and 48 of 48 on the 7th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Both middays qualify and the cited authorities disagree. The one covered longer is ruled, as a boundary.

    priority: disputed → greater-coverage · margin 757 s

  5. 05

    Ruling

    Ṛṣi Pañcamī, Baoding, 1902: Saturday 6 September.

    confidence: boundary (tie-break-disputed)

Say it like this

In Baoding, Ṛṣi Pañcamī 1902 falls on Saturday 6 September. Pañcamī runs from 11:35 on Sat 6 Sep to 12:53 on Sun 7 Sep 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/1902/rishi-panchami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 6 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 6 Sep
compat-drikpanchangComparison profileSat 6 Sep
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/rishi-panchami · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Śukla · Pañcamī
Kāla
Madhyāhna
Priority
Disputed
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 103

“S 5 Rsi pancami (madhyahnavyapini) — If occurs on two successive days, it is to be observed according to Madhava on the 1st day and according to Hemadri and Divodasa on the 2nd day” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePañcamīMadhyāhna 6thCoveredMadhyāhna 7thCoveredRuled
Los Angeles19:35 → 20:5311:2748 min11:270 min6 Sep
Chicago21:35 → 22:5311:2548 min11:240 min6 Sep
Jersey City22:35 → 23:5311:3048 min11:300 min6 Sep
Port of Spain23:35 → 00:5311:4148 min11:400 min6 Sep
London03:35 → 04:5311:3548 min11:340 min6 Sep
Durban05:05 → 06:2311:0148 min11:000 min6 Sep
Dubai07:16 → 08:3411:3448 min11:340 min6 Sep
Delhi08:56 → 10:1411:4648 min11:460 min6 Sep
Kolkata08:56 → 10:1411:0248 min11:020 min6 Sep
Singapore10:30 → 11:4811:3448 min11:3414 min6 Sep
Sydney13:35 → 14:5311:300 min11:3048 min7 Sep
Suva15:30 → 16:4811:360 min11:3648 min7 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
rishi-panchami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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