Ruling · Nāga Caturthī · 2028

Saturday 21 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 576 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 Saturday 21 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 Sunday 22 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 02:02 on Sat 21 Oct to 00:19 on Sun 22 Oct.

    2028-10-20T18:02:26Z → 2028-10-21T16:18:48Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 21st, 11:38–12:26 on the 22nd.

    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 21st and 0 of 48 on the 22nd.

    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 34563 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 2028: Saturday 21 October.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 2028 falls on Saturday 21 October. Caturthī runs from 02:02 on Sat 21 Oct to 00:19 on Sun 22 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2028/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 21 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 21 Oct
compat-drikpanchangComparison profileSat 21 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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles11:02 → 09:1912:1348 min12:130 min20 Oct
Chicago13:02 → 11:1912:110 min12:110 min21 Oct
Jersey City14:02 → 12:1912:170 min12:172 min21 Oct
Port of Spain14:02 → 12:1911:270 min11:2748 min21 Oct
London19:02 → 17:1912:210 min12:2148 min21 Oct
Durban20:02 → 18:1911:170 min11:1748 min21 Oct
Dubai22:02 → 20:1911:390 min11:3948 min21 Oct
Delhi23:32 → 21:4911:420 min11:4148 min21 Oct
Kolkata23:32 → 21:4910:570 min10:5748 min21 Oct
Singapore02:02 → 00:1912:250 min12:2548 min21 Oct
Sydney05:02 → 03:1912:160 min12:1648 min21 Oct
Suva06:02 → 04:1911:270 min11:2748 min21 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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