Ruling · Dāmodara Dvādaśī · 2020

Friday 31 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 580 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 31 July

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

48 of 48 minutes covered

Midday of Saturday 1 August

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

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 02:20 on Fri 31 Jul to 01:13 on Sat 1 Aug.

    2020-07-30T18:20:23Z → 2020-07-31T17:12:33Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 31st, 12:00–12:48 on the 1st.

    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 31st and 0 of 48 on the 1st.

    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 34793 s

  5. 05

    Ruling

    Dāmodara Dvādaśī, Baoding, 2020: Friday 31 July.

    confidence: determinate

Say it like this

In Baoding, Dāmodara Dvādaśī 2020 falls on Friday 31 July. Dvādaśī runs from 02:20 on Fri 31 Jul to 01:13 on Sat 1 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2020/damodara-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 31 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 31 Jul
compat-drikpanchangComparison profileFri 31 Jul
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 30thCoveredMadhyāhna 31stCoveredRuled
Los Angeles11:20 → 10:1312:3548 min12:350 min30 Jul
Chicago13:20 → 12:1312:330 min12:330 min30 Jul
Jersey City14:20 → 13:1312:380 min12:3834 min31 Jul
Port of Spain14:20 → 13:1311:480 min11:4848 min31 Jul
London19:20 → 18:1312:420 min12:4248 min31 Jul
Durban20:20 → 19:1311:380 min11:3848 min31 Jul
Dubai22:20 → 21:1312:010 min12:0148 min31 Jul
Delhi23:50 → 22:4312:030 min12:0348 min31 Jul
Kolkata23:50 → 22:4311:190 min11:1948 min31 Jul
Singapore02:20 → 01:1312:470 min12:4748 min31 Jul
Sydney04:20 → 03:1311:380 min11:3848 min31 Jul
Suva06:20 → 05:1311:490 min11:4948 min31 Jul
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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