Ruling · Ratha Saptamī · 2086

Monday 21 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 251 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two dawns

One ghaṭī is 24 minutes. Aruṇodaya is 2 muhūrtas before sunrise.

Dawn of Monday 21 January

Taken. The only dawn Saptamī reaches.

05:40 aruṇodaya beginssunrise 07:33
05:1605:4006:0406:2806:5207:1607:4008:04

113 of 113 minutes covered

Dawn of Tuesday 22 January

Saptamī is absent from aruṇodaya. Not taken.

05:39 aruṇodaya beginssunrise 07:32
05:1505:3906:0306:2706:5107:1507:3908:03

0 of 113 minutes covered

Saptamī presentAruṇodaya, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 01:29 on Mon 21 Jan to 23:30 on Mon 21 Jan.

    2086-01-20T17:29:16Z → 2086-01-21T15:30:06Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:40–07:33 on the 21st, 05:39–07:32 on the 22nd.

    arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Saptamī must be present during aruṇodaya. It covers 113 of 113 minutes on the 21st and 0 of 113 on the 22nd.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

    Only one dawn qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 15033 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 2086: Monday 21 January.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 2086 falls on Monday 21 January. Saptamī runs from 01:29 on Mon 21 Jan to 23:30 on Mon 21 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2086/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 21 Jan
Ahargaṇa, classicalDisc centre, no refractionMon 21 Jan
compat-drikpanchangComparison profileMon 21 Jan
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/ratha-saptami · ruleset 2026.3-draft

Month
Māgha, amānta
Pakṣa · aṅga
Śukla · Saptamī
Kāla
Aruṇodaya
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 105

“S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha].” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceSaptamīAruṇodaya 20thCoveredAruṇodaya 21stCoveredRuled
Los Angeles09:29 → 07:3005:070 min05:07110 min21 Jan
Chicago11:29 → 09:3005:180 min05:18115 min21 Jan
Jersey City12:29 → 10:3005:220 min05:21114 min21 Jan
Port of Spain13:29 → 11:3004:500 min04:5099 min21 Jan
London17:29 → 15:3005:510 min05:50123 min21 Jan
Durban19:29 → 17:3003:530 min03:5382 min21 Jan
Dubai21:29 → 19:3005:200 min05:20105 min21 Jan
Delhi22:59 → 21:0005:270 min05:27107 min21 Jan
Kolkata22:59 → 21:0004:350 min04:35104 min21 Jan
Singapore01:29 → 23:3005:390 min05:3996 min21 Jan
Sydney04:29 → 02:3004:450 min04:4680 min21 Jan
Suva05:29 → 03:3004:190 min04:1918 min21 Jan
Profile · tradition
pac-rp@2026.1 · smarta
Rule
ratha-saptami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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