Ruling · Dāmodara Dvādaśī · 2080

Monday 26 August

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 2 min 59 s away. Say “contested”.

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 Monday 26 August

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:56  12:44 madhyāhna ends
11:0811:3211:5612:2012:4413:0813:32

48 of 48 minutes covered

Midday of Tuesday 27 August

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:55  12:43 madhyāhna ends
Dvādaśī ends 11:52:28
11:0711:3111:5512:1912:4313:0713:31

0 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 09:27 on Mon 26 Aug to 11:52 on Tue 27 Aug.

    2080-08-26T01:27:09Z → 2080-08-27T03:52:29Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 26th, 11:55–12:43 on the 27th.

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

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 26th and 0 of 48 on the 27th.

    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 179 s < 300 s

  5. 05

    Ruling

    Dāmodara Dvādaśī, Baoding, 2080: Monday 26 August.

    confidence: boundary (margin)

Say it like this

In Baoding, Dāmodara Dvādaśī 2080 falls on Monday 26 August. Dvādaśī runs from 09:27 on Mon 26 Aug to 11:52 on Tue 27 Aug and covers all of madhyāhna that midday. It is 2 min 59 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2080/damodara-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 26 Aug
Ahargaṇa, classicalDisc centre, no refractionMon 26 Aug
compat-drikpanchangComparison profileMon 26 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 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles18:27 → 20:5212:3048 min12:300 min26 Aug
Chicago20:27 → 22:5212:2848 min12:280 min26 Aug
Jersey City21:27 → 23:5212:3448 min12:330 min26 Aug
Port of Spain21:27 → 23:5211:4448 min11:440 min26 Aug
London02:27 → 04:5212:3848 min12:380 min26 Aug
Durban03:27 → 05:5211:3448 min11:340 min26 Aug
Dubai05:27 → 07:5211:5648 min11:560 min26 Aug
Delhi06:57 → 09:2211:5948 min11:580 min26 Aug
Kolkata06:57 → 09:2211:1448 min11:140 min26 Aug
Singapore09:27 → 11:5212:4348 min12:420 min26 Aug
Sydney11:27 → 13:5211:3348 min11:3348 min26 Aug
Suva13:27 → 15:5211:440 min11:4448 min27 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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