Ruling · Nāga Caturthī · 1998

Saturday 24 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 476 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 Saturday 24 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 Sunday 25 October

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 01:33 on Sat 24 Oct to 03:42 on Sun 25 Oct.

    1998-10-23T17:32:47Z → 1998-10-24T19:42:11Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 24th, 11:38–12:26 on the 25th.

    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 24th and 0 of 48 on the 25th.

    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 28551 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1998: Saturday 24 October.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1998 falls on Saturday 24 October. Caturthī runs from 01:33 on Sat 24 Oct to 03:42 on Sun 25 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1998/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 24 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 24 Oct
compat-drikpanchangComparison profileSat 24 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 23rdCoveredMadhyāhna 24thCoveredRuled
Los Angeles10:33 → 12:4212:1348 min12:1329 min24 Oct
Chicago12:33 → 14:4212:1126 min12:1148 min24 Oct
Jersey City13:33 → 15:4212:160 min12:1648 min24 Oct
Port of Spain13:33 → 15:4211:260 min11:2648 min24 Oct
London18:33 → 20:4212:200 min12:2048 min24 Oct
Durban19:33 → 21:4211:160 min11:1648 min24 Oct
Dubai21:33 → 23:4211:390 min11:3948 min24 Oct
Delhi23:03 → 01:1211:410 min11:4148 min24 Oct
Kolkata23:03 → 01:1210:570 min10:5748 min24 Oct
Singapore01:33 → 03:4212:250 min12:2548 min24 Oct
Sydney03:33 → 06:4211:160 min11:1648 min24 Oct
Suva05:33 → 07:4211:270 min11:2748 min24 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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