Ruling · Mahānavamī · 2070

Monday 13 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 259 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 13 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:40  12:28 madhyāhna ends
10:5211:1611:4012:0412:2812:5213:16

48 of 48 minutes covered

Midday of Tuesday 14 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:40  12:28 madhyāhna ends
10:5211:1611:4012:0412:2812:5213:16

0 of 48 minutes covered

Navamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Navamī runs from 05:42 on Mon 13 Oct to 07:21 on Tue 14 Oct.

    2070-10-12T21:41:59Z → 2070-10-13T23:21:13Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 13th, 11:40–12:28 on the 14th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.

    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: purvaviddha → only-day · margin 15528 s

  5. 05

    Ruling

    Mahānavamī, Baoding, 2070: Monday 13 October.

    confidence: determinate

Say it like this

In Baoding, Mahānavamī 2070 falls on Monday 13 October. Navamī runs from 05:42 on Mon 13 Oct to 07:21 on Tue 14 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2070/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 13 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 13 Oct
compat-drikpanchangComparison profileMon 13 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/mahanavami · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Śukla · Navamī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 104

“S 9 Mahanavami (purvaviddha) (In Bengal it is observed as paraviddha covering one muhurta from sunrise).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104. The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceNavamīMadhyāhna 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles14:42 → 16:2112:150 min12:1548 min13 Oct
Chicago16:42 → 18:2112:130 min12:1348 min13 Oct
Jersey City17:42 → 19:2112:190 min12:1848 min13 Oct
Port of Spain17:42 → 19:2111:290 min11:2848 min13 Oct
London22:42 → 00:2112:230 min12:2248 min13 Oct
Durban23:42 → 01:2111:190 min11:1848 min13 Oct
Dubai01:42 → 03:2111:410 min11:4148 min13 Oct
Delhi03:12 → 04:5111:430 min11:4348 min13 Oct
Kolkata03:12 → 04:5110:590 min10:5948 min13 Oct
Singapore05:42 → 07:2112:270 min12:2748 min13 Oct
Sydney08:42 → 10:2112:180 min12:1848 min13 Oct
Suva09:42 → 11:2111:290 min11:2948 min13 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
mahanavami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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