Ruling · Skanda Ṣaṣṭhī · 2031

Friday 19 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 595 minutes.

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 18 December

Ṣaṣṭhī is absent from madhyāhna. Not taken.

madhyāhna begins 11:50  12:38 madhyāhna ends
11:0211:2611:5012:1412:3813:0213:26

0 of 48 minutes covered

Midday of Friday 19 December

Taken. The only midday Ṣaṣṭhī reaches.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

48 of 48 minutes covered

Ṣaṣṭhī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Ṣaṣṭhī runs from 00:58 on Fri 19 Dec to 22:34 on Fri 19 Dec.

    2031-12-18T16:58:03Z → 2031-12-19T14:33:46Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 18th, 11:51–12:39 on the 19th.

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

  3. 03

    Rule

    Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 35689 s

  5. 05

    Ruling

    Skanda Ṣaṣṭhī, Baoding, 2031: Friday 19 December.

    confidence: determinate

Say it like this

In Baoding, Skanda Ṣaṣṭhī 2031 falls on Friday 19 December. Ṣaṣṭhī runs from 00:58 on Fri 19 Dec to 22:34 on Fri 19 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2031/skanda-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 19 Dec
Ahargaṇa, classicalDisc centre, no refractionFri 19 Dec
compat-drikpanchangComparison profileFri 19 Dec
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/skanda-shashthi · ruleset 2026.3-draft

Month
Mārgaśīrṣa, amānta
Pakṣa · aṅga
Śukla · Ṣaṣṭhī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 104

“S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceṢaṣṭhīMadhyāhna 18thCoveredMadhyāhna 19thCoveredRuled
Los Angeles08:58 → 06:3411:2648 min11:260 min18 Dec
Chicago10:58 → 08:3411:2348 min11:240 min18 Dec
Jersey City11:58 → 09:3411:2919 min11:290 min18 Dec
Port of Spain12:58 → 10:3411:390 min11:390 min19 Dec
London16:58 → 14:3411:330 min11:3348 min19 Dec
Durban18:58 → 16:3411:280 min11:2948 min19 Dec
Dubai20:58 → 18:3411:510 min11:5248 min19 Dec
Delhi22:28 → 20:0411:530 min11:5448 min19 Dec
Kolkata22:28 → 20:0411:090 min11:0948 min19 Dec
Singapore00:58 → 22:3412:370 min12:3748 min19 Dec
Sydney03:58 → 01:3412:270 min12:2848 min19 Dec
Suva04:58 → 02:3411:390 min11:3948 min19 Dec
Profile · tradition
pac-rp@2026.1 · smarta
Rule
skanda-shashthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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