Ruling · Dāmodara Dvādaśī · 1905

Friday 11 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 22 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 11 August

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:59  12:47 madhyāhna ends
Dvādaśī begins 12:25:21
11:1111:3511:5912:2312:4713:1113:35

22 of 48 minutes covered, the last 22

Midday of Saturday 12 August

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:59  12:47 madhyāhna ends
Dvādaśī ends 11:31:41
11:1111:3511:5912:2312:4713:1113:35

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 12:25 on Fri 11 Aug to 11:32 on Sat 12 Aug.

    1905-08-11T04:25:22Z → 1905-08-12T03:31:42Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 11th, 11:59–12:47 on the 12th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 22 of 48 minutes on the 11th and 0 of 48 on the 12th.

    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 1299 s

  5. 05

    Ruling

    Dāmodara Dvādaśī, Baoding, 1905: Friday 11 August.

    confidence: determinate

Say it like this

In Baoding, Dāmodara Dvādaśī 1905 falls on Friday 11 August. Dvādaśī runs from 12:25 on Fri 11 Aug to 11:32 on Sat 12 Aug and covers 22 of 48 minutes of madhyāhna that midday.

ahargana.org/baoding/festivals/1905/damodara-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 11 Aug
Ahargaṇa, classicalDisc centre, no refractionFri 11 Aug
compat-drikpanchangComparison profileFri 11 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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles20:25 → 19:3211:3448 min11:340 min11 Aug
Chicago22:25 → 21:3211:3148 min11:310 min11 Aug
Jersey City23:25 → 22:3211:3748 min11:370 min11 Aug
Port of Spain00:25 → 23:3211:4748 min11:470 min11 Aug
London04:25 → 03:3211:4148 min11:410 min11 Aug
Durban06:25 → 05:3211:3748 min11:370 min11 Aug
Dubai08:06 → 07:1311:4148 min11:410 min11 Aug
Delhi09:46 → 08:5311:5348 min11:530 min11 Aug
Kolkata09:46 → 08:5311:0948 min11:080 min11 Aug
Singapore11:25 → 10:3211:4648 min11:460 min11 Aug
Sydney14:25 → 13:3211:370 min11:3648 min12 Aug
Suva16:20 → 15:2711:430 min11:4248 min12 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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