Ruling · Dāmodara Dvādaśī · 2012

Monday 30 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 327 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 Sunday 29 July

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 Monday 30 July

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 20:47 on Sun 29 Jul to 18:15 on Mon 30 Jul.

    2012-07-29T12:46:37Z → 2012-07-30T10:15:10Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 29th, 12:00–12:48 on the 30th.

    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 29th and 48 of 48 on the 30th.

    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 19611 s

  5. 05

    Ruling

    Dāmodara Dvādaśī, Baoding, 2012: Monday 30 July.

    confidence: determinate

Say it like this

In Baoding, Dāmodara Dvādaśī 2012 falls on Monday 30 July. Dvādaśī runs from 20:47 on Sun 29 Jul to 18:15 on Mon 30 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2012/damodara-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 30 Jul
Ahargaṇa, classicalDisc centre, no refractionMon 30 Jul
compat-drikpanchangComparison profileMon 30 Jul
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 29thCoveredMadhyāhna 30thCoveredRuled
Los Angeles05:47 → 03:1512:3548 min12:350 min29 Jul
Chicago07:47 → 05:1512:3348 min12:330 min29 Jul
Jersey City08:47 → 06:1512:3848 min12:380 min29 Jul
Port of Spain08:47 → 06:1511:4848 min11:480 min29 Jul
London13:47 → 11:1512:420 min12:420 min30 Jul
Durban14:47 → 12:1511:380 min11:3837 min30 Jul
Dubai16:47 → 14:1512:010 min12:0148 min30 Jul
Delhi18:17 → 15:4512:030 min12:0348 min30 Jul
Kolkata18:17 → 15:4511:190 min11:1948 min30 Jul
Singapore20:47 → 18:1512:470 min12:4748 min30 Jul
Sydney22:47 → 20:1511:380 min11:3848 min30 Jul
Suva00:47 → 22:1511:490 min11:4948 min30 Jul
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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