Ruling · Dāmodara Dvādaśī · 1980

Saturday 23 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 372 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 22 August

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:57  12:45 madhyāhna ends
11:0911:3311:5712:2112:4513:0913:33

0 of 48 minutes covered

Midday of Saturday 23 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

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 20:09 on Fri 22 Aug to 18:57 on Sat 23 Aug.

    1980-08-22T12:08:33Z → 1980-08-23T10:56:48Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 22nd, 11:56–12:44 on the 23rd.

    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 22nd and 48 of 48 on the 23rd.

    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 22342 s

  5. 05

    Ruling

    Dāmodara Dvādaśī, Baoding, 1980: Saturday 23 August.

    confidence: determinate

Say it like this

In Baoding, Dāmodara Dvādaśī 1980 falls on Saturday 23 August. Dvādaśī runs from 20:09 on Fri 22 Aug to 18:57 on Sat 23 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1980/damodara-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 23 Aug
Ahargaṇa, classicalDisc centre, no refractionSat 23 Aug
compat-drikpanchangComparison profileSat 23 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 22ndCoveredMadhyāhna 23rdCoveredRuled
Los Angeles05:09 → 03:5712:3148 min12:310 min22 Aug
Chicago07:09 → 05:5712:2948 min12:290 min22 Aug
Jersey City08:09 → 06:5712:3548 min12:340 min22 Aug
Port of Spain08:09 → 06:5711:4548 min11:440 min22 Aug
London13:09 → 11:5712:3918 min12:380 min22 Aug
Durban14:09 → 12:5711:350 min11:3548 min23 Aug
Dubai16:09 → 14:5711:570 min11:5748 min23 Aug
Delhi17:39 → 16:2712:000 min11:5948 min23 Aug
Kolkata17:39 → 16:2711:150 min11:1548 min23 Aug
Singapore19:39 → 18:2712:130 min12:1348 min23 Aug
Sydney22:09 → 20:5711:340 min11:3448 min23 Aug
Suva00:09 → 22:5711:450 min11:4548 min23 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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