Ruling · Dāmodara Dvādaśī · 1929

Friday 16 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 20 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 16 August

Taken. Both middays qualify; the rule takes the first.

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

48 of 48 minutes covered

Midday of Saturday 17 August

Qualifies with 20 of 48 minutes. Not taken.

madhyāhna begins 11:58  12:46 madhyāhna ends
Dvādaśī ends 12:18:20
11:1011:3411:5812:2212:4613:1013:34

20 of 48 minutes covered, the first 20

Dvādaśī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 09:54 on Fri 16 Aug to 12:18 on Sat 17 Aug.

    1929-08-16T01:54:01Z → 1929-08-17T04:18:21Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 16th, 11:58–12:46 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 48 of 48 minutes on the 16th and 20 of 48 on the 17th.

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

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 1224 s

  5. 05

    Ruling

    Dāmodara Dvādaśī, Baoding, 1929: Friday 16 August.

    confidence: determinate

Say it like this

In Baoding, Dāmodara Dvādaśī 1929 falls on Friday 16 August. Dvādaśī runs from 09:54 on Fri 16 Aug to 12:18 on Sat 17 Aug and covers all of madhyāhna that midday. It also reaches the next midday for 20 minutes; by the rule the first midday is taken.

ahargana.org/baoding/festivals/1929/damodara-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 16 Aug
Ahargaṇa, classicalDisc centre, no refractionFri 16 Aug
compat-drikpanchangComparison profileFri 16 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 Angeles17:54 → 20:1811:3348 min11:330 min16 Aug
Chicago20:54 → 23:1812:3048 min12:300 min16 Aug
Jersey City21:54 → 00:1812:3648 min12:360 min16 Aug
Port of Spain21:54 → 00:1811:4648 min11:460 min16 Aug
London02:54 → 05:1812:4048 min12:400 min16 Aug
Durban03:54 → 06:1811:3648 min11:360 min16 Aug
Dubai05:54 → 08:1811:5948 min11:590 min16 Aug
Delhi07:24 → 09:4812:0148 min12:010 min16 Aug
Kolkata07:24 → 09:4811:1748 min11:160 min16 Aug
Singapore08:54 → 11:1811:4548 min11:450 min16 Aug
Sydney11:54 → 14:1811:3630 min11:3648 min16 Aug
Suva13:54 → 16:1811:470 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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