Ruling · Nāga Caturthī · 1955

Friday 18 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 333 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 Friday 18 November

Taken. The only midday Caturthī reaches.

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

48 of 48 minutes covered

Midday of Saturday 19 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 03:21 on Fri 18 Nov to 06:07 on Sat 19 Nov.

    1955-11-17T19:21:00Z → 1955-11-18T22:06:40Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 18th, 11:39–12:27 on the 19th.

    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 18th and 0 of 48 on the 19th.

    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 19952 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1955: Friday 18 November.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1955 falls on Friday 18 November. Caturthī runs from 03:21 on Fri 18 Nov to 06:07 on Sat 19 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1955/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 18 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 18 Nov
compat-drikpanchangComparison profileFri 18 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles11:21 → 14:0711:1441 min11:1448 min18 Nov
Chicago13:21 → 16:0711:110 min11:1248 min18 Nov
Jersey City14:21 → 17:0711:170 min11:1748 min18 Nov
Port of Spain15:21 → 18:0711:270 min11:2748 min18 Nov
London19:21 → 22:0711:210 min11:2148 min18 Nov
Durban21:21 → 00:0711:170 min11:1748 min18 Nov
Dubai23:21 → 02:0711:400 min11:4048 min18 Nov
Delhi00:51 → 03:3711:420 min11:4248 min18 Nov
Kolkata00:51 → 03:3710:570 min10:5748 min18 Nov
Singapore02:51 → 05:3711:550 min11:5648 min18 Nov
Sydney05:21 → 08:0711:160 min11:1648 min18 Nov
Suva07:21 → 10:0711:270 min11:2748 min18 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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