Ruling · Nāga Caturthī · 1935

Thursday 31 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 537 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 30 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 31 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 21:22 on Wed 30 Oct to 21:40 on Thu 31 Oct.

    1935-10-30T13:22:26Z → 1935-10-31T13:39:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 30th, 11:38–12:26 on the 31st.

    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 30th and 48 of 48 on the 31st.

    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 32205 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1935: Thursday 31 October.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1935 falls on Thursday 31 October. Caturthī runs from 21:22 on Wed 30 Oct to 21:40 on Thu 31 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1935/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 31 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 31 Oct
compat-drikpanchangComparison profileThu 31 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 30thCoveredMadhyāhna 31stCoveredRuled
Los Angeles05:22 → 05:4011:1348 min11:120 min30 Oct
Chicago07:22 → 07:4011:1048 min11:100 min30 Oct
Jersey City08:22 → 08:4011:1648 min11:160 min30 Oct
Port of Spain09:22 → 09:4011:2648 min11:260 min30 Oct
London13:22 → 13:4011:200 min11:2048 min31 Oct
Durban15:22 → 15:4011:160 min11:1648 min31 Oct
Dubai17:22 → 17:4011:380 min11:3848 min31 Oct
Delhi18:52 → 19:1011:410 min11:4148 min31 Oct
Kolkata18:52 → 19:1010:560 min10:5648 min31 Oct
Singapore20:42 → 21:0011:440 min11:4448 min31 Oct
Sydney23:22 → 23:4011:150 min11:1548 min31 Oct
Suva01:22 → 01:4011:260 min11:2648 min31 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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