Ruling · Akhaṇḍa Dvādaśī · 2037

Saturday 19 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 375 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 Friday 18 December

Dvādaśī is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

Midday of Saturday 19 December

Taken. The only midday Dvādaśī reaches.

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

48 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 18:53 on Fri 18 Dec to 20:25 on Sat 19 Dec.

    2037-12-18T10:53:21Z → 2037-12-19T12:24:41Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 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

    Dvādaśī 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: paraviddha → only-day · margin 22479 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 2037: Saturday 19 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 2037 falls on Saturday 19 December. Dvādaśī runs from 18:53 on Fri 18 Dec to 20:25 on Sat 19 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2037/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 19 Dec
Ahargaṇa, classicalDisc centre, no refractionSat 19 Dec
compat-drikpanchangComparison profileSat 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/akhanda-dvadashi · ruleset 2026.3-draft

Month
Mārgaśīrṣa, amānta
Pakṣa · aṅga
Śukla · Dvādaśī
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 104

“S 12 Matsya dvadasi, Akhanda dvadasi (paraviddha), Vyanjana dvadasi & Dana dvadasi (Orissa).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDvādaśīMadhyāhna 18thCoveredMadhyāhna 19thCoveredRuled
Los Angeles02:53 → 04:2511:2648 min11:260 min18 Dec
Chicago04:53 → 06:2511:2348 min11:240 min18 Dec
Jersey City05:53 → 07:2511:2948 min11:300 min18 Dec
Port of Spain06:53 → 08:2511:3948 min11:390 min18 Dec
London10:53 → 12:2511:3348 min11:3448 min19 Dec
Durban12:53 → 14:2511:290 min11:2948 min19 Dec
Dubai14:53 → 16:2511:510 min11:5248 min19 Dec
Delhi16:23 → 17:5511:540 min11:5448 min19 Dec
Kolkata16:23 → 17:5511:090 min11:1048 min19 Dec
Singapore18:53 → 20:2512:370 min12:3848 min19 Dec
Sydney21:53 → 23:2512:280 min12:2848 min19 Dec
Suva22:53 → 00:2511:390 min11:3948 min19 Dec
Profile · tradition
pac-rp@2026.1 · smarta
Rule
akhanda-dvadashi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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