Ruling · Nāga Caturthī · 1908

Thursday 29 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 146 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 28 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

Midday of Thursday 29 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

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

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 15:24 on Wed 28 Oct to 14:52 on Thu 29 Oct.

    1908-10-28T07:23:41Z → 1908-10-29T06:51:55Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 28th, 11:38–12:26 on the 29th.

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

  3. 03

    Rule

    Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 28th and 48 of 48 on the 29th.

    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 8770 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1908: Thursday 29 October.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1908 falls on Thursday 29 October. Caturthī runs from 15:24 on Wed 28 Oct to 14:52 on Thu 29 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1908/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 29 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 29 Oct
compat-drikpanchangComparison profileThu 29 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 28thCoveredMadhyāhna 29thCoveredRuled
Los Angeles23:24 → 22:5211:1348 min11:130 min28 Oct
Chicago01:24 → 00:5211:1048 min11:100 min28 Oct
Jersey City02:24 → 01:5211:1648 min11:160 min28 Oct
Port of Spain03:24 → 02:5211:2648 min11:260 min28 Oct
London07:24 → 06:5211:2048 min11:200 min28 Oct
Durban09:24 → 08:5211:1648 min11:160 min28 Oct
Dubai11:05 → 10:3311:2048 min11:190 min28 Oct
Delhi12:54 → 12:2211:410 min11:4141 min29 Oct
Kolkata12:54 → 12:2210:560 min10:5648 min29 Oct
Singapore14:24 → 13:5211:250 min11:2448 min29 Oct
Sydney17:24 → 16:5211:150 min11:1548 min29 Oct
Suva19:19 → 18:4711:210 min11:2148 min29 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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