Ruling · Nāga Caturthī · 1920

Sunday 14 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 225 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 Sunday 14 November

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 Monday 15 November

Caturthī is absent from madhyāhna. Not taken.

madhyāhna begins 11:39  12:27 madhyāhna ends
10:5111:1511:3912:0312:2712:5113:15

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 05:27 on Sun 14 Nov to 07:54 on Mon 15 Nov.

    1920-11-13T21:27:24Z → 1920-11-14T23:54:00Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 14th, 11:39–12:27 on the 15th.

    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 14th and 0 of 48 on the 15th.

    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 13475 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1920: Sunday 14 November.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1920 falls on Sunday 14 November. Caturthī runs from 05:27 on Sun 14 Nov to 07:54 on Mon 15 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1920/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 14 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 14 Nov
compat-drikpanchangComparison profileSun 14 Nov
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 13thCoveredMadhyāhna 14thCoveredRuled
Los Angeles13:27 → 15:5411:130 min11:1348 min14 Nov
Chicago15:27 → 17:5411:110 min11:1148 min14 Nov
Jersey City16:27 → 18:5411:160 min11:1748 min14 Nov
Port of Spain17:27 → 19:5411:260 min11:2748 min14 Nov
London21:27 → 23:5411:210 min11:2148 min14 Nov
Durban23:27 → 01:5411:160 min11:1748 min14 Nov
Dubai01:27 → 03:5411:390 min11:3948 min14 Nov
Delhi02:57 → 05:2411:410 min11:4148 min14 Nov
Kolkata02:57 → 05:2410:570 min10:5748 min14 Nov
Singapore04:27 → 06:5411:250 min11:2548 min14 Nov
Sydney07:27 → 09:5411:160 min11:1648 min14 Nov
Suva09:27 → 11:5411:270 min11:2748 min15 Nov
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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