Ruling · Skanda Pañcamī · 1950

Wednesday 19 July

Boundaryin Daqing, under the Rashtriya Panchang method. A threshold is only 2 min 47 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 Wednesday 19 July

Taken. The only midday Pañcamī reaches.

madhyāhna begins 11:22  12:10 madhyāhna ends
Pañcamī begins 12:07:02
10:3410:5811:2211:4612:1012:3412:58

3 of 48 minutes covered, the last 3

Midday of Thursday 20 July

Pañcamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:22  12:10 madhyāhna ends
Pañcamī ends 11:00:06
10:3410:5811:2211:4612:1012:3412:58

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 12:07 on Wed 19 Jul to 11:00 on Thu 20 Jul.

    1950-07-19T04:07:02Z → 1950-07-20T03:00:06Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 19th, 11:22–12:10 on the 20th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pañcamī must be present during madhyāhna. It covers 3 of 48 minutes on the 19th and 0 of 48 on the 20th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: paraviddha → only-day · margin 167 s < 300 s

  5. 05

    Ruling

    Skanda Pañcamī, Daqing, 1950: Wednesday 19 July.

    confidence: boundary (margin)

Say it like this

In Daqing, Skanda Pañcamī 1950 falls on Wednesday 19 July. Pañcamī runs from 12:07 on Wed 19 Jul to 11:00 on Thu 20 Jul and covers 3 of 48 minutes of madhyāhna that midday. It is 2 min 47 s from a threshold: treat the date as contested.

ahargana.org/daqing/festivals/1950/skanda-panchami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 19 Jul
Ahargaṇa, classicalDisc centre, no refractionWed 19 Jul
compat-drikpanchangComparison profileThu 20 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/skanda-panchami · ruleset 2026.3-draft

Month
Āṣāḍha, amānta
Pakṣa · aṅga
Śukla · Pañcamī
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 102

“S 5 Skanda pancami (paraviddha).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePañcamīMadhyāhna 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles21:07 → 20:0012:3548 min12:350 min19 Jul
Chicago23:07 → 22:0012:3348 min12:330 min19 Jul
Jersey City00:07 → 23:0012:3848 min12:380 min19 Jul
Port of Spain00:07 → 23:0011:4848 min11:480 min19 Jul
London05:07 → 04:0012:4248 min12:420 min19 Jul
Durban06:07 → 05:0011:3848 min11:380 min19 Jul
Dubai08:07 → 07:0012:0148 min12:010 min19 Jul
Delhi09:37 → 08:3012:0348 min12:030 min19 Jul
Kolkata09:37 → 08:3011:1948 min11:190 min19 Jul
Singapore11:37 → 10:3012:1748 min12:170 min19 Jul
Sydney14:07 → 13:0011:370 min11:3748 min20 Jul
Suva16:07 → 15:0011:480 min11:4948 min20 Jul
Profile · tradition
pac-rp@2026.1 · smarta
Rule
skanda-panchami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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