Ruling · Dāmodara Dvādaśī · 1986

Sunday 17 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 58 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 16 August

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:58  13:46 madhyāhna ends
12:1012:3412:5813:2213:4614:1014:34

0 of 48 minutes covered

Midday of Sunday 17 August

Taken. Dvādaśī reaches neither midday; the rule takes the second day.

madhyāhna begins 12:58  13:46 madhyāhna ends
12:1012:3412:5813:2213:4614:1014:34

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 14:45 on Sat 16 Aug to 11:52 on Sun 17 Aug.

    1986-08-16T05:44:34Z → 1986-08-17T02:51:52Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:58–13:46 on the 16th, 12:58–13:46 on the 17th.

    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 16th and 0 of 48 on the 17th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: purvaviddha → second-day · margin 3502 s

  5. 05

    Ruling

    Dāmodara Dvādaśī, Baoding, 1986: Sunday 17 August.

    confidence: determinate

Say it like this

In Baoding, Dāmodara Dvādaśī 1986 falls on Sunday 17 August. Dvādaśī runs from 14:45 on Sat 16 Aug to 11:52 on Sun 17 Aug, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/1986/damodara-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 17 Aug
Ahargaṇa, classicalDisc centre, no refractionSun 17 Aug
compat-drikpanchangComparison profileSun 17 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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles22:45 → 19:5212:3348 min12:330 min16 Aug
Chicago00:45 → 21:5212:3048 min12:300 min16 Aug
Jersey City01:45 → 22:5212:3648 min12:360 min16 Aug
Port of Spain01:45 → 22:5211:4648 min11:460 min16 Aug
London06:45 → 03:5212:4048 min12:400 min16 Aug
Durban07:45 → 04:5211:3648 min11:360 min16 Aug
Dubai09:45 → 06:5211:5948 min11:590 min16 Aug
Delhi11:15 → 08:2212:0148 min12:010 min16 Aug
Kolkata11:15 → 08:2211:1748 min11:170 min16 Aug
Singapore13:45 → 10:5212:450 min12:450 min17 Aug
Sydney15:45 → 12:5211:360 min11:3648 min17 Aug
Suva17:45 → 14:5211:470 min11:4748 min17 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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