Ruling · Nāga Caturthī · 1930

Saturday 25 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 630 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 25 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 26 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 01:08 on Sat 25 Oct to 00:52 on Sun 26 Oct.

    1930-10-24T17:08:30Z → 1930-10-25T16:52:18Z

  2. 02

    Kāla

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

    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 25th and 0 of 48 on the 26th.

    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 37778 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1930: Saturday 25 October.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1930 falls on Saturday 25 October. Caturthī runs from 01:08 on Sat 25 Oct to 00:52 on Sun 26 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1930/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 25 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 25 Oct
compat-drikpanchangComparison profileSat 25 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 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles09:08 → 08:5211:1348 min11:130 min24 Oct
Chicago11:08 → 10:5211:1148 min11:100 min24 Oct
Jersey City12:08 → 11:5211:160 min11:1636 min25 Oct
Port of Spain13:08 → 12:5211:260 min11:2648 min25 Oct
London17:08 → 16:5211:200 min11:2048 min25 Oct
Durban19:08 → 18:5211:160 min11:1648 min25 Oct
Dubai21:08 → 20:5211:390 min11:3948 min25 Oct
Delhi22:38 → 22:2211:410 min11:4148 min25 Oct
Kolkata22:38 → 22:2210:570 min10:5748 min25 Oct
Singapore00:08 → 23:5211:250 min11:2548 min25 Oct
Sydney03:08 → 02:5211:160 min11:1648 min25 Oct
Suva05:08 → 04:5211:270 min11:2748 min25 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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