Ruling · Dāmodara Dvādaśī · 1943

Friday 13 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 98 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 12 August

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:59  13:47 madhyāhna ends
12:1112:3512:5913:2313:4714:1114:35

0 of 48 minutes covered

Midday of Friday 13 August

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:59  13:47 madhyāhna ends
12:1112:3512:5913:2313:4714:1114:35

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 18:29 on Thu 12 Aug to 15:25 on Fri 13 Aug.

    1943-08-12T09:28:40Z → 1943-08-13T06:25:01Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:59–13:47 on the 12th, 12:59–13:47 on the 13th.

    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 12th and 48 of 48 on the 13th.

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

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 5893 s

  5. 05

    Ruling

    Dāmodara Dvādaśī, Baoding, 1943: Friday 13 August.

    confidence: determinate

Say it like this

In Baoding, Dāmodara Dvādaśī 1943 falls on Friday 13 August. Dvādaśī runs from 18:29 on Thu 12 Aug to 15:25 on Fri 13 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1943/damodara-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 13 Aug
Ahargaṇa, classicalDisc centre, no refractionFri 13 Aug
compat-drikpanchangComparison profileFri 13 Aug
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/damodara-dvadashi · ruleset 2026.3-draft

Month
Śrāvaṇa, amānta
Pakṣa · aṅga
Śukla · Dvādaśī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 103

“S 12 Buddha dvadasi, Damodara dvadasi (purvaviddha), Visnu-pavitraropana.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDvādaśīMadhyāhna 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles02:29 → 23:2512:3448 min12:340 min12 Aug
Chicago04:29 → 01:2512:3148 min12:310 min12 Aug
Jersey City05:29 → 02:2512:3748 min12:370 min12 Aug
Port of Spain06:29 → 03:2512:4748 min12:470 min12 Aug
London11:29 → 08:2513:4148 min13:410 min12 Aug
Durban11:29 → 08:2511:3748 min11:370 min12 Aug
Dubai13:29 → 10:2512:000 min12:000 min13 Aug
Delhi15:59 → 12:5513:020 min13:020 min13 Aug
Kolkata15:59 → 12:5512:180 min12:1738 min13 Aug
Singapore18:29 → 15:2513:460 min13:4648 min13 Aug
Sydney19:29 → 16:2511:370 min11:3648 min13 Aug
Suva21:29 → 18:2511:480 min11:4748 min13 Aug
Profile · tradition
pac-rp@2026.1 · smarta
Rule
damodara-dvadashi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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