Ruling · Nāga Caturthī · 2085

Monday 22 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 538 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 22 October

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 Tuesday 23 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 02:40 on Mon 22 Oct to 02:28 on Tue 23 Oct.

    2085-10-21T18:40:25Z → 2085-10-22T18:27:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 22nd, 11:38–12:26 on the 23rd.

    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 22nd and 0 of 48 on the 23rd.

    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 32287 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 2085: Monday 22 October.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 2085 falls on Monday 22 October. Caturthī runs from 02:40 on Mon 22 Oct to 02:28 on Tue 23 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2085/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 22 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 22 Oct
compat-drikpanchangComparison profileMon 22 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 21stCoveredMadhyāhna 22ndCoveredRuled
Los Angeles11:40 → 11:2812:1348 min12:130 min21 Oct
Chicago13:40 → 13:2812:110 min12:1148 min22 Oct
Jersey City14:40 → 14:2812:170 min12:1748 min22 Oct
Port of Spain14:40 → 14:2811:270 min11:2748 min22 Oct
London19:40 → 19:2812:210 min12:2148 min22 Oct
Durban20:40 → 20:2811:170 min11:1748 min22 Oct
Dubai22:40 → 22:2811:390 min11:3948 min22 Oct
Delhi00:10 → 23:5811:420 min11:4248 min22 Oct
Kolkata00:10 → 23:5810:570 min10:5748 min22 Oct
Singapore02:40 → 02:2812:250 min12:2548 min22 Oct
Sydney05:40 → 05:2812:160 min12:1648 min22 Oct
Suva06:40 → 06:2811:270 min11:2748 min22 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

About Ahargaṇa