Ruling · Dāmodara Dvādaśī · 2031

Thursday 31 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 485 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 Wednesday 30 July

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

Midday of Thursday 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

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 00:03 on Thu 31 Jul to 20:53 on Thu 31 Jul.

    2031-07-30T16:03:11Z → 2031-07-31T12:53:20Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 30th, 12:00–12:48 on the 31st.

    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 30th and 48 of 48 on the 31st.

    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 29100 s

  5. 05

    Ruling

    Dāmodara Dvādaśī, Baoding, 2031: Thursday 31 July.

    confidence: determinate

Say it like this

In Baoding, Dāmodara Dvādaśī 2031 falls on Thursday 31 July. Dvādaśī runs from 00:03 on Thu 31 Jul to 20:53 on Thu 31 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2031/damodara-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 31 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 31 Jul
compat-drikpanchangComparison profileThu 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 Angeles09:03 → 05:5312:3548 min12:350 min30 Jul
Chicago11:03 → 07:5312:3348 min12:330 min30 Jul
Jersey City12:03 → 08:5312:3948 min12:380 min30 Jul
Port of Spain12:03 → 08:5311:4933 min11:480 min30 Jul
London17:03 → 13:5312:430 min12:4248 min31 Jul
Durban18:03 → 14:5311:390 min11:3848 min31 Jul
Dubai20:03 → 16:5312:010 min12:0148 min31 Jul
Delhi21:33 → 18:2312:030 min12:0348 min31 Jul
Kolkata21:33 → 18:2311:190 min11:1948 min31 Jul
Singapore00:03 → 20:5312:470 min12:4748 min31 Jul
Sydney02:03 → 22:5311:380 min11:3848 min31 Jul
Suva04:03 → 00:5311:490 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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