Ruling · Nāga Pañcamī · 2085

Friday 27 July

Boundaryin Daqing, under the Rashtriya Panchang method. A threshold is only 2 min 57 s away. Say “contested”.

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 Thursday 26 July

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:23  12:11 madhyāhna ends
Pañcamī begins 11:19:38
10:3510:5911:2311:4712:1112:3512:59

48 of 48 minutes covered

Midday of Friday 27 July

Taken. Both middays qualify; the rule takes the second.

madhyāhna begins 11:23  12:11 madhyāhna ends
10:3510:5911:2311:4712:1112:3512:59

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 11:20 on Thu 26 Jul to 13:28 on Fri 27 Jul.

    2085-07-26T03:19:38Z → 2085-07-27T05:27:46Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 26th, 11:23–12:11 on the 27th.

    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 26th and 48 of 48 on the 27th.

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

  4. 04

    Tie-break

    Both middays qualify. Paraviddhā: the second is taken.

    priority: paraviddha → paraviddha · margin 177 s < 300 s

  5. 05

    Ruling

    Nāga Pañcamī, Daqing, 2085: Friday 27 July.

    confidence: boundary (margin)

Say it like this

In Daqing, Nāga Pañcamī 2085 falls on Friday 27 July. Pañcamī runs from 11:20 on Thu 26 Jul to 13:28 on Fri 27 Jul and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken. It is 2 min 57 s from a threshold: treat the date as contested.

ahargana.org/daqing/festivals/2085/naga-panchami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 27 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 27 Jul
compat-drikpanchangComparison profileFri 27 Jul
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/naga-panchami · ruleset 2026.3-draft

Month
Śrāvaṇa, amānta
Pakṣa · aṅga
Śukla · Pañcamī
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 103

“S 5 Naga pancami (paraviddha)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePañcamīMadhyāhna 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles20:20 → 22:2812:3648 min12:360 min26 Jul
Chicago22:20 → 00:2812:3348 min12:330 min26 Jul
Jersey City23:20 → 01:2812:3948 min12:390 min26 Jul
Port of Spain23:20 → 01:2811:4948 min11:490 min26 Jul
London04:20 → 06:2812:4348 min12:430 min26 Jul
Durban05:20 → 07:2811:3948 min11:390 min26 Jul
Dubai07:20 → 09:2812:0248 min12:020 min26 Jul
Delhi08:50 → 10:5812:0448 min12:040 min26 Jul
Kolkata08:50 → 10:5811:1948 min11:190 min26 Jul
Singapore11:20 → 13:2812:4848 min12:4840 min27 Jul
Sydney13:20 → 15:2811:380 min11:3848 min27 Jul
Suva15:20 → 17:2811:490 min11:4948 min27 Jul
Profile · tradition
pac-rp@2026.1 · smarta
Rule
naga-panchami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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