Ruling · Nāga Caturthī · 2090

Thursday 26 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 606 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 Thursday 26 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 Friday 27 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 01:32 on Thu 26 Oct to 23:47 on Thu 26 Oct.

    2090-10-25T17:31:59Z → 2090-10-26T15:46:45Z

  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 48 of 48 minutes on the 26th and 0 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 36367 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 2090: Thursday 26 October.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 2090 falls on Thursday 26 October. Caturthī runs from 01:32 on Thu 26 Oct to 23:47 on Thu 26 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2090/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 26 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 26 Oct
compat-drikpanchangComparison profileThu 26 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 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles10:32 → 08:4712:1348 min12:130 min25 Oct
Chicago12:32 → 10:4712:1127 min12:100 min25 Oct
Jersey City13:32 → 11:4712:160 min12:160 min26 Oct
Port of Spain13:32 → 11:4711:260 min11:2621 min26 Oct
London18:32 → 16:4712:200 min12:2048 min26 Oct
Durban19:32 → 17:4711:160 min11:1648 min26 Oct
Dubai21:32 → 19:4711:390 min11:3948 min26 Oct
Delhi23:02 → 21:1711:410 min11:4148 min26 Oct
Kolkata23:02 → 21:1710:570 min10:5748 min26 Oct
Singapore01:32 → 23:4712:250 min12:2548 min26 Oct
Sydney04:32 → 02:4712:160 min12:1648 min26 Oct
Suva05:32 → 03:4711:270 min11:2748 min26 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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