Ruling · Nāga Caturthī · 1919

Tuesday 28 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 11 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 Monday 27 October

Qualifies with 11 of 48 minutes. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
Caturthī begins 12:14:32
10:5011:1411:3812:0212:2612:5013:14

11 of 48 minutes covered, the last 11

Midday of Tuesday 28 October

Taken. Both middays qualify; the rule takes the second.

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 12:15 on Mon 27 Oct to 14:58 on Tue 28 Oct.

    1919-10-27T04:14:32Z → 1919-10-28T06:57:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 27th, 11:38–12:26 on the 28th.

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

  3. 03

    Rule

    Caturthī must be present during madhyāhna. It covers 11 of 48 minutes on the 27th and 48 of 48 on the 28th.

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

  4. 04

    Tie-break

    Both middays qualify. Paraviddhā: the second is taken.

    priority: paraviddha → paraviddha · margin 686 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1919: Tuesday 28 October.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1919 falls on Tuesday 28 October. Caturthī runs from 12:15 on Mon 27 Oct to 14:58 on Tue 28 Oct and covers all of madhyāhna that midday. It also reaches the previous midday for 11 minutes; by the rule the second midday is taken.

ahargana.org/baoding/festivals/1919/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 28 Oct
Ahargaṇa, classicalDisc centre, no refractionTue 28 Oct
compat-drikpanchangComparison profileTue 28 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 27thCoveredMadhyāhna 28thCoveredRuled
Los Angeles20:15 → 22:5811:1348 min11:130 min27 Oct
Chicago22:15 → 00:5811:1048 min11:100 min27 Oct
Jersey City23:15 → 01:5811:1648 min11:160 min27 Oct
Port of Spain00:15 → 02:5811:2648 min11:260 min27 Oct
London04:15 → 06:5811:2048 min11:200 min27 Oct
Durban06:15 → 08:5811:1648 min11:160 min27 Oct
Dubai07:56 → 10:3911:2048 min11:200 min27 Oct
Delhi09:45 → 12:2811:4148 min11:4147 min28 Oct
Kolkata09:45 → 12:2810:5648 min10:5648 min28 Oct
Singapore11:15 → 13:5811:2548 min11:2548 min28 Oct
Sydney14:15 → 16:5811:160 min11:1548 min28 Oct
Suva16:15 → 18:5811:270 min11:2648 min28 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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