Ruling · Nāga Caturthī · 1924

Friday 31 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 380 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 October

Taken. The only midday Caturthī reaches.

madhyāhna begins 11:38  12:26 madhyāhna ends
10:5011:1411:3812:0212:2612:5013:14

48 of 48 minutes covered

Midday of Saturday 1 November

Caturthī is absent from madhyāhna. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
10:5011:1411:3812:0212:2612:5013:14

0 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 05:18 on Fri 31 Oct to 02:11 on Sat 1 Nov.

    1924-10-30T21:17:31Z → 1924-10-31T18:11:20Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 31st, 11:38–12:26 on the 1st.

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

  3. 03

    Rule

    Caturthī 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. 104

  4. 04

    Tie-break

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

    priority: paraviddha → only-day · margin 22806 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1924: Friday 31 October.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1924 falls on Friday 31 October. Caturthī runs from 05:18 on Fri 31 Oct to 02:11 on Sat 1 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1924/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 31 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 31 Oct
compat-drikpanchangComparison profileFri 31 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/naga-chaturthi · ruleset 2026.3-draft

Month
Kārtika, amānta
Pakṣa · aṅga
Śukla · Caturthī
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 104

“S 4 Naga caturthi (paraviddha and madhyahnavyapini).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturthīMadhyāhna 30thCoveredMadhyāhna 31stCoveredRuled
Los Angeles13:18 → 10:1111:120 min11:120 min31 Oct
Chicago15:18 → 12:1111:100 min11:1048 min31 Oct
Jersey City16:18 → 13:1111:160 min11:1648 min31 Oct
Port of Spain17:18 → 14:1111:260 min11:2648 min31 Oct
London21:18 → 18:1111:200 min11:2048 min31 Oct
Durban23:18 → 20:1111:160 min11:1648 min31 Oct
Dubai01:18 → 22:1111:380 min11:3848 min31 Oct
Delhi02:48 → 23:4111:410 min11:4148 min31 Oct
Kolkata02:48 → 23:4110:560 min10:5648 min31 Oct
Singapore04:18 → 01:1111:240 min11:2448 min31 Oct
Sydney07:18 → 04:1111:150 min11:1548 min31 Oct
Suva09:18 → 06:1111:260 min11:2648 min31 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
naga-chaturthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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