Ruling · Dāmodara Dvādaśī · 2013

Sunday 18 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 403 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 17 August

Dvādaśī is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

Midday of Sunday 18 August

Taken. The only midday Dvādaśī reaches.

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

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 22:38 on Sat 17 Aug to 19:28 on Sun 18 Aug.

    2013-08-17T14:38:26Z → 2013-08-18T11:28:22Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 17th, 11:58–12:46 on the 18th.

    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 17th and 48 of 48 on the 18th.

    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 24160 s

  5. 05

    Ruling

    Dāmodara Dvādaśī, Baoding, 2013: Sunday 18 August.

    confidence: determinate

Say it like this

In Baoding, Dāmodara Dvādaśī 2013 falls on Sunday 18 August. Dvādaśī runs from 22:38 on Sat 17 Aug to 19:28 on Sun 18 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2013/damodara-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 18 Aug
Ahargaṇa, classicalDisc centre, no refractionSun 18 Aug
compat-drikpanchangComparison profileSun 18 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles07:38 → 04:2812:3348 min12:320 min17 Aug
Chicago09:38 → 06:2812:3048 min12:300 min17 Aug
Jersey City10:38 → 07:2812:3648 min12:360 min17 Aug
Port of Spain10:38 → 07:2811:4648 min11:460 min17 Aug
London15:38 → 12:2812:400 min12:400 min18 Aug
Durban16:38 → 13:2811:360 min11:3648 min18 Aug
Dubai18:38 → 15:2811:590 min11:5848 min18 Aug
Delhi20:08 → 16:5812:010 min12:0148 min18 Aug
Kolkata20:08 → 16:5811:160 min11:1648 min18 Aug
Singapore22:38 → 19:2812:450 min12:4448 min18 Aug
Sydney00:38 → 21:2811:350 min11:3548 min18 Aug
Suva02:38 → 23:2811:470 min11:4648 min18 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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