Ruling · Nāga Caturthī · 1977

Monday 14 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 422 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 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 Tuesday 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 04:37 on Mon 14 Nov to 01:22 on Tue 15 Nov.

    1977-11-13T20:36:39Z → 1977-11-14T17:21:57Z

  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 25303 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1977: Monday 14 November.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1977 falls on Monday 14 November. Caturthī runs from 04:37 on Mon 14 Nov to 01:22 on Tue 15 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1977/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 14 Nov
Ahargaṇa, classicalDisc centre, no refractionMon 14 Nov
compat-drikpanchangComparison profileMon 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 Angeles12:37 → 09:2211:130 min11:130 min14 Nov
Chicago14:37 → 11:2211:110 min11:1111 min14 Nov
Jersey City15:37 → 12:2211:160 min11:1748 min14 Nov
Port of Spain16:37 → 13:2211:260 min11:2748 min14 Nov
London20:37 → 17:2211:210 min11:2148 min14 Nov
Durban22:37 → 19:2211:160 min11:1748 min14 Nov
Dubai00:37 → 21:2211:390 min11:3948 min14 Nov
Delhi02:07 → 22:5211:410 min11:4148 min14 Nov
Kolkata02:07 → 22:5210:570 min10:5748 min14 Nov
Singapore04:07 → 00:5211:550 min11:5548 min14 Nov
Sydney07:37 → 04:2212:160 min12:1648 min14 Nov
Suva08:37 → 05:2211:270 min11:2748 min14 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

About Ahargaṇa