Ruling · Ratha Saptamī · 1923

Wednesday 24 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 416 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 Wednesday 24 January

Taken. The only dawn Saptamī reaches.

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

113 of 113 minutes covered

Dawn of Thursday 25 January

Saptamī is absent from aruṇodaya. Not taken.

05:39 aruṇodaya beginssunrise 07:31
05:1505:3906:0306:2706:5107:1507:3908:03

0 of 112 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 20:01 on Tue 23 Jan to 22:43 on Wed 24 Jan.

    1923-01-23T12:01:22Z → 1923-01-24T14:42:59Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:39–07:32 on the 24th, 05:39–07:31 on the 25th.

    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 24th and 0 of 112 on the 25th.

    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 24962 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 1923: Wednesday 24 January.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 1923 falls on Wednesday 24 January. Saptamī runs from 20:01 on Tue 23 Jan to 22:43 on Wed 24 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1923/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 24 Jan
Ahargaṇa, classicalDisc centre, no refractionWed 24 Jan
compat-drikpanchangComparison profileWed 24 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 23rdCoveredAruṇodaya 24thCoveredRuled
Los Angeles04:01 → 06:4305:07110 min05:0697 min23 Jan
Chicago06:01 → 08:4305:1771 min05:17114 min24 Jan
Jersey City07:01 → 09:4305:2114 min05:21114 min24 Jan
Port of Spain08:01 → 10:4304:510 min04:5199 min24 Jan
London12:01 → 14:4305:500 min05:49123 min24 Jan
Durban14:01 → 16:4303:540 min03:5582 min24 Jan
Dubai16:01 → 18:4305:200 min05:20105 min24 Jan
Delhi17:31 → 20:1305:270 min05:27107 min24 Jan
Kolkata17:31 → 20:1304:350 min04:35104 min24 Jan
Singapore19:01 → 21:4304:390 min04:3996 min24 Jan
Sydney22:01 → 00:4303:470 min03:4880 min24 Jan
Suva00:01 → 02:4304:190 min04:2088 min24 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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