Ruling · Dāmodara Dvādaśī · 1983

Saturday 20 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 35 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 19 August

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:58  12:46 madhyāhna ends
Dvādaśī begins 13:20:20
11:1011:3411:5812:2212:4613:1013:34

0 of 48 minutes covered

Midday of Saturday 20 August

Taken. The only midday Dvādaśī reaches.

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

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 13:20 on Fri 19 Aug to 15:39 on Sat 20 Aug.

    1983-08-19T05:20:20Z → 1983-08-20T07:39:07Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 19th, 11:57–12:45 on the 20th.

    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 19th and 48 of 48 on the 20th.

    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 2085 s

  5. 05

    Ruling

    Dāmodara Dvādaśī, Baoding, 1983: Saturday 20 August.

    confidence: determinate

Say it like this

In Baoding, Dāmodara Dvādaśī 1983 falls on Saturday 20 August. Dvādaśī runs from 13:20 on Fri 19 Aug to 15:39 on Sat 20 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1983/damodara-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 20 Aug
Ahargaṇa, classicalDisc centre, no refractionSat 20 Aug
compat-drikpanchangComparison profileFri 19 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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles22:20 → 00:3912:3248 min12:320 min19 Aug
Chicago00:20 → 02:3912:3048 min12:300 min19 Aug
Jersey City01:20 → 03:3912:3648 min12:350 min19 Aug
Port of Spain01:20 → 03:3911:4648 min11:450 min19 Aug
London06:20 → 08:3912:4048 min12:390 min19 Aug
Durban07:20 → 09:3911:3648 min11:360 min19 Aug
Dubai09:20 → 11:3911:5848 min11:580 min19 Aug
Delhi10:50 → 13:0912:0148 min12:0048 min19 Aug
Kolkata10:50 → 13:0911:1648 min11:1648 min19 Aug
Singapore13:20 → 15:3912:4412 min12:4448 min19 Aug
Sydney15:20 → 17:3911:350 min11:3548 min20 Aug
Suva17:20 → 19:3911:460 min11:4648 min20 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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