Ruling · Nāga Caturthī · 1905

Tuesday 31 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 456 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 Tuesday 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

Midday of Wednesday 1 November

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 04:02 on Tue 31 Oct to 01:16 on Wed 1 Nov.

    1905-10-30T20:02:09Z → 1905-10-31T17:15:53Z

  2. 02

    Kāla

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

    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 31st and 0 of 48 on the 1st.

    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 27330 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1905: Tuesday 31 October.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1905 falls on Tuesday 31 October. Caturthī runs from 04:02 on Tue 31 Oct to 01:16 on Wed 1 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1905/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 31 Oct
Ahargaṇa, classicalDisc centre, no refractionTue 31 Oct
compat-drikpanchangComparison profileTue 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 Angeles12:02 → 09:1611:130 min11:120 min31 Oct
Chicago14:02 → 11:1611:100 min11:106 min31 Oct
Jersey City15:02 → 12:1611:160 min11:1648 min31 Oct
Port of Spain16:02 → 13:1611:260 min11:2648 min31 Oct
London20:02 → 17:1611:200 min11:2048 min31 Oct
Durban22:02 → 19:1611:160 min11:1648 min31 Oct
Dubai23:43 → 20:5711:190 min11:1948 min31 Oct
Delhi01:23 → 22:3711:320 min11:3248 min31 Oct
Kolkata01:23 → 22:3710:470 min10:4748 min31 Oct
Singapore03:02 → 00:1611:240 min11:2448 min31 Oct
Sydney06:02 → 03:1611:150 min11:1548 min31 Oct
Suva07:57 → 05:1111:210 min11:2148 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

About Ahargaṇa