Ruling · Gopāṣṭamī · 1909

Sunday 21 November

Determinatein Chattogram, under the Rashtriya Panchang method. Clear of every threshold by 8 min 11 s.

Decide it for

ChattogramDelhiKolkataSingaporeSydneyJersey City

22°20′ N 91°50′ E · Asia/Dhaka · GeoNames 1205733

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Saturday 20 November

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:07  11:55 madhyāhna ends
Aṣṭamī begins 12:03:40
10:1910:4311:0711:3111:5512:1912:43

0 of 48 minutes covered

Midday of Sunday 21 November

Taken. Aṣṭamī reaches neither midday; the rule takes the second day.

madhyāhna begins 11:07  11:55 madhyāhna ends
Aṣṭamī ends 10:32:45
10:1910:4311:0711:3111:5512:1912:43

0 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 12:03 on Sat 20 Nov to 10:32 on Sun 21 Nov.

    1909-11-20T06:10:20Z → 1909-11-21T04:39:26Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:07–11:55 on the 20th, 11:07–11:55 on the 21st.

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

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 0 of 48 on the 21st.

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

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: unstated → second-day · margin 491 s

  5. 05

    Ruling

    Gopāṣṭamī, Chattogram, 1909: Sunday 21 November.

    confidence: determinate

Say it like this

In Chattogram, Gopāṣṭamī 1909 falls on Sunday 21 November. Aṣṭamī runs from 12:03 on Sat 20 Nov to 10:32 on Sun 21 Nov, and reaches madhyāhna on neither day.

ahargana.org/chattogram/festivals/1909/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 21 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 21 Nov
compat-drikpanchangComparison profileSat 20 Nov
No institution has a recorded ruling for Chattogram.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/gopashtami · ruleset 2026.3-draft

Month
Kārtika, amānta
Pakṣa · aṅga
Śukla · Aṣṭamī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 104

“S 8 Gopastami, Gosthastami.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīMadhyāhna 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles22:10 → 20:3911:1548 min11:150 min20 Nov
Chicago00:10 → 22:3911:1248 min11:120 min20 Nov
Jersey City01:10 → 23:3911:1848 min11:180 min20 Nov
Port of Spain02:10 → 00:3911:2848 min11:280 min20 Nov
London06:10 → 04:3911:2248 min11:220 min20 Nov
Durban08:10 → 06:3911:1848 min11:180 min20 Nov
Dubai09:51 → 08:2011:2148 min11:210 min20 Nov
Delhi11:40 → 10:0911:4348 min11:430 min20 Nov
Kolkata11:40 → 10:0910:586 min10:580 min20 Nov
Singapore13:10 → 11:3911:260 min11:2613 min21 Nov
Sydney16:10 → 14:3911:170 min11:1748 min21 Nov
Suva18:05 → 16:3411:230 min11:2348 min21 Nov
Profile · tradition
pac-rp@2026.1 · smarta
Rule
gopashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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