Ruling · Dāmodara Dvādaśī · 2017

Friday 4 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 379 minutes.

Decide it for

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 3 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 Friday 4 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 19:07 on Thu 3 Aug to 21:22 on Fri 4 Aug.

    2017-08-03T11:07:10Z → 2017-08-04T13:22:23Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 3rd, 12:00–12:48 on the 4th.

    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 3rd and 48 of 48 on the 4th.

    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 22747 s

  5. 05

    Ruling

    Dāmodara Dvādaśī, Baoding, 2017: Friday 4 August.

    confidence: determinate

Say it like this

In Baoding, Dāmodara Dvādaśī 2017 falls on Friday 4 August. Dvādaśī runs from 19:07 on Thu 3 Aug to 21:22 on Fri 4 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2017/damodara-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 4 Aug
Ahargaṇa, classicalDisc centre, no refractionFri 4 Aug
compat-drikpanchangComparison profileFri 4 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 3rdCoveredMadhyāhna 4thCoveredRuled
Los Angeles04:07 → 06:2212:3548 min12:350 min3 Aug
Chicago06:07 → 08:2212:3248 min12:320 min3 Aug
Jersey City07:07 → 09:2212:3848 min12:380 min3 Aug
Port of Spain07:07 → 09:2211:4848 min11:480 min3 Aug
London12:07 → 14:2212:4248 min12:4248 min3 Aug
Durban13:07 → 15:2211:380 min11:3848 min4 Aug
Dubai15:07 → 17:2212:010 min12:0148 min4 Aug
Delhi16:37 → 18:5212:030 min12:0348 min4 Aug
Kolkata16:37 → 18:5211:190 min11:1948 min4 Aug
Singapore19:07 → 21:2212:470 min12:4748 min4 Aug
Sydney21:07 → 23:2211:380 min11:3748 min4 Aug
Suva23:07 → 01:2211:490 min11:4948 min4 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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