Ruling · Nāga Caturthī · 2000

Tuesday 31 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 278 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 Monday 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 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

Caturthī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 17:04 on Mon 30 Oct to 18:42 on Tue 31 Oct.

    2000-10-30T09:03:45Z → 2000-10-31T10:42:03Z

  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 16692 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 2000: Tuesday 31 October.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 2000 falls on Tuesday 31 October. Caturthī runs from 17:04 on Mon 30 Oct to 18:42 on Tue 31 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2000/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 Angeles01:04 → 02:4211:1248 min11:120 min30 Oct
Chicago03:04 → 04:4211:1048 min11:100 min30 Oct
Jersey City04:04 → 05:4211:1648 min11:160 min30 Oct
Port of Spain05:04 → 06:4211:2648 min11:260 min30 Oct
London09:04 → 10:4211:2048 min11:200 min30 Oct
Durban11:04 → 12:4211:1648 min11:1648 min31 Oct
Dubai13:04 → 14:4211:380 min11:3848 min31 Oct
Delhi14:34 → 16:1211:410 min11:4148 min31 Oct
Kolkata14:34 → 16:1210:560 min10:5648 min31 Oct
Singapore17:04 → 18:4212:240 min12:2448 min31 Oct
Sydney20:04 → 21:4212:150 min12:1548 min31 Oct
Suva21:04 → 22:4211:260 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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