Ruling · Nāga Caturthī · 1938

Thursday 27 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 331 minutes.

Decide it for

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 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

Midday of Thursday 27 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 17:57 on Wed 26 Oct to 19:32 on Thu 27 Oct.

    1938-10-26T09:56:33Z → 1938-10-27T11:32:03Z

  2. 02

    Kāla

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

    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 26th and 48 of 48 on the 27th.

    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 19833 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1938: Thursday 27 October.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1938 falls on Thursday 27 October. Caturthī runs from 17:57 on Wed 26 Oct to 19:32 on Thu 27 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1938/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 27 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 27 Oct
compat-drikpanchangComparison profileThu 27 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 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles01:57 → 03:3211:1348 min11:130 min26 Oct
Chicago03:57 → 05:3211:1048 min11:100 min26 Oct
Jersey City04:57 → 06:3211:1648 min11:160 min26 Oct
Port of Spain05:57 → 07:3211:2648 min11:260 min26 Oct
London09:57 → 11:3211:2048 min11:2012 min27 Oct
Durban11:57 → 13:3211:168 min11:1648 min27 Oct
Dubai13:57 → 15:3211:390 min11:3948 min27 Oct
Delhi15:27 → 17:0211:410 min11:4148 min27 Oct
Kolkata15:27 → 17:0210:570 min10:5648 min27 Oct
Singapore17:17 → 18:5211:450 min11:4548 min27 Oct
Sydney19:57 → 21:3211:160 min11:1548 min27 Oct
Suva21:57 → 23:3211:270 min11:2648 min27 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

About Ahargaṇa