Ruling · Govardhana Pūjā · 2009

Monday 19 October

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 0 min 45 s away. Say “contested”.

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 Sunday 18 October

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:39  12:27 madhyāhna ends
10:5111:1511:3912:0312:2712:5113:15

0 of 48 minutes covered

Midday of Monday 19 October

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:39  12:27 madhyāhna ends
Pratipadā ends 12:27:37
10:5111:1511:3912:0312:2712:5113:15

48 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 13:33 on Sun 18 Oct to 12:28 on Mon 19 Oct.

    2009-10-18T05:33:05Z → 2009-10-19T04:27:38Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 18th, 11:39–12:27 on the 19th.

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

  3. 03

    Rule

    Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: purvaviddha → only-day · margin 45 s < 300 s

  5. 05

    Ruling

    Govardhana Pūjā, Baoding, 2009: Monday 19 October.

    confidence: boundary (margin)

Say it like this

In Baoding, Govardhana Pūjā 2009 falls on Monday 19 October. Pratipadā runs from 13:33 on Sun 18 Oct to 12:28 on Mon 19 Oct and covers all of madhyāhna that midday. It is 0 min 45 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2009/govardhana-puja · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 19 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 19 Oct
compat-drikpanchangComparison profileMon 19 Oct
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/govardhana-puja · ruleset 2026.3-draft

Month
Kārtika, amānta
Pakṣa · aṅga
Śukla · Pratipadā
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 104

“S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePratipadāMadhyāhna 18thCoveredMadhyāhna 19thCoveredRuled
Los Angeles22:33 → 21:2812:1448 min12:140 min18 Oct
Chicago00:33 → 23:2812:1148 min12:110 min18 Oct
Jersey City01:33 → 00:2812:1748 min12:170 min18 Oct
Port of Spain01:33 → 00:2811:2748 min11:270 min18 Oct
London06:33 → 05:2812:2148 min12:210 min18 Oct
Durban07:33 → 06:2811:1748 min11:170 min18 Oct
Dubai09:33 → 08:2811:4048 min11:400 min18 Oct
Delhi11:03 → 09:5811:4248 min11:420 min18 Oct
Kolkata11:03 → 09:5810:5843 min10:570 min18 Oct
Singapore13:33 → 12:2812:260 min12:262 min19 Oct
Sydney16:33 → 15:2812:170 min12:1648 min19 Oct
Suva17:33 → 16:2811:280 min11:2748 min19 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
govardhana-puja@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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