Ruling · Dāmodara Dvādaśī · 2009

Sunday 2 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 609 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 Saturday 1 August

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

0 of 48 minutes covered

Midday of Sunday 2 August

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

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 22:57 on Sat 1 Aug to 01:22 on Mon 3 Aug.

    2009-08-01T14:57:04Z → 2009-08-02T17:21:34Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 1st, 12:00–12:48 on the 2nd.

    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 1st and 48 of 48 on the 2nd.

    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 36531 s

  5. 05

    Ruling

    Dāmodara Dvādaśī, Baoding, 2009: Sunday 2 August.

    confidence: determinate

Say it like this

In Baoding, Dāmodara Dvādaśī 2009 falls on Sunday 2 August. Dvādaśī runs from 22:57 on Sat 1 Aug to 01:22 on Mon 3 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2009/damodara-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 2 Aug
Ahargaṇa, classicalDisc centre, no refractionSun 2 Aug
compat-drikpanchangComparison profileSun 2 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 1stCoveredMadhyāhna 2ndCoveredRuled
Los Angeles07:57 → 10:2212:3548 min12:350 min1 Aug
Chicago09:57 → 12:2212:3348 min12:330 min1 Aug
Jersey City10:57 → 13:2212:3848 min12:3843 min1 Aug
Port of Spain10:57 → 13:2211:4848 min11:4848 min1 Aug
London15:57 → 18:2212:420 min12:4248 min2 Aug
Durban16:57 → 19:2211:380 min11:3848 min2 Aug
Dubai18:57 → 21:2212:010 min12:0148 min2 Aug
Delhi20:27 → 22:5212:030 min12:0348 min2 Aug
Kolkata20:27 → 22:5211:190 min11:1948 min2 Aug
Singapore22:57 → 01:2212:470 min12:4748 min2 Aug
Sydney00:57 → 03:2211:380 min11:3848 min2 Aug
Suva02:57 → 05:2211:490 min11:4948 min2 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

About Ahargaṇa