Ruling · Ratha Saptamī · 1926

Wednesday 20 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 565 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 20 January

Taken. The only dawn Saptamī reaches.

05:41 aruṇodaya beginssunrise 07:34
05:1705:4106:0506:2906:5307:1707:4108:05

113 of 113 minutes covered

Dawn of Thursday 21 January

Saptamī is absent from aruṇodaya. Not taken.

05:40 aruṇodaya beginssunrise 07:34
05:1605:4006:0406:2806:5207:1607:4008:04

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 20:16 on Tue 19 Jan to 18:55 on Wed 20 Jan.

    1926-01-19T12:15:49Z → 1926-01-20T10:55:07Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:41–07:34 on the 20th, 05:40–07:34 on the 21st.

    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 20th and 0 of 113 on the 21st.

    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 33890 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 1926: Wednesday 20 January.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 1926 falls on Wednesday 20 January. Saptamī runs from 20:16 on Tue 19 Jan to 18:55 on Wed 20 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1926/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 20 Jan
Ahargaṇa, classicalDisc centre, no refractionWed 20 Jan
compat-drikpanchangComparison profileWed 20 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 19thCoveredAruṇodaya 20thCoveredRuled
Los Angeles04:16 → 02:5505:07111 min05:070 min19 Jan
Chicago06:16 → 04:5505:1959 min05:190 min19 Jan
Jersey City07:16 → 05:5505:221 min05:2233 min20 Jan
Port of Spain08:16 → 06:5504:500 min04:5099 min20 Jan
London12:16 → 10:5505:530 min05:52124 min20 Jan
Durban14:16 → 12:5503:510 min03:5282 min20 Jan
Dubai16:16 → 14:5505:200 min05:20106 min20 Jan
Delhi17:46 → 16:2505:270 min05:27107 min20 Jan
Kolkata17:46 → 16:2504:350 min04:35105 min20 Jan
Singapore19:16 → 17:5504:380 min04:3896 min20 Jan
Sydney22:16 → 20:5503:440 min03:4579 min20 Jan
Suva00:16 → 22:5504:170 min04:1888 min20 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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