Ruling · Skanda Ṣaṣṭhī · 2021

Thursday 9 December

Determinatein Daegu, under the Rashtriya Panchang method. Clear of every threshold by 643 minutes.

Decide it for

DaeguDelhiKolkataSingaporeSydneyJersey City

35°52′ N 128°36′ E · Asia/Seoul · GeoNames 1835329

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Wednesday 8 December

Ṣaṣṭhī is absent from madhyāhna. Not taken.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

0 of 48 minutes covered

Midday of Thursday 9 December

Taken. The only midday Ṣaṣṭhī reaches.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

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 00:56 on Thu 9 Dec to 23:25 on Thu 9 Dec.

    2021-12-08T15:56:25Z → 2021-12-09T14:24:32Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 8th, 11:54–12:42 on the 9th.

    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 8th and 48 of 48 on the 9th.

    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 38565 s

  5. 05

    Ruling

    Skanda Ṣaṣṭhī, Daegu, 2021: Thursday 9 December.

    confidence: determinate

Say it like this

In Daegu, Skanda Ṣaṣṭhī 2021 falls on Thursday 9 December. Ṣaṣṭhī runs from 00:56 on Thu 9 Dec to 23:25 on Thu 9 Dec and covers all of madhyāhna that midday.

ahargana.org/daegu/festivals/2021/skanda-shashthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 9 Dec
Ahargaṇa, classicalDisc centre, no refractionThu 9 Dec
compat-drikpanchangComparison profileThu 9 Dec
No institution has a recorded ruling for Daegu.

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 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles07:56 → 06:2511:2148 min11:210 min8 Dec
Chicago09:56 → 08:2511:1948 min11:190 min8 Dec
Jersey City10:56 → 09:2511:2448 min11:250 min8 Dec
Port of Spain11:56 → 10:2511:3426 min11:350 min8 Dec
London15:56 → 14:2511:280 min11:2948 min9 Dec
Durban17:56 → 16:2511:240 min11:2448 min9 Dec
Dubai19:56 → 18:2511:470 min11:4748 min9 Dec
Delhi21:26 → 19:5511:490 min11:4948 min9 Dec
Kolkata21:26 → 19:5511:040 min11:0548 min9 Dec
Singapore23:56 → 22:2512:320 min12:3348 min9 Dec
Sydney02:56 → 01:2512:230 min12:2348 min9 Dec
Suva03:56 → 02:2511:340 min11:3548 min9 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

About Ahargaṇa