Ruling · Ratha Saptamī · 1901

Sunday 27 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 39 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 Saturday 26 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

Dawn of Sunday 27 January

Taken. The only dawn Saptamī reaches.

05:38 aruṇodaya beginssunrise 07:30
Saptamī ends 06:50:22
05:1405:3806:0206:2606:5007:1407:3808:02

72 of 112 minutes covered, the first 72

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

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 08:57 on Sat 26 Jan to 06:50 on Sun 27 Jan.

    1901-01-26T00:57:01Z → 1901-01-26T22:50:23Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:39–07:31 on the 26th, 05:38–07:30 on the 27th.

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

  3. 03

    Rule

    Saptamī must be present during aruṇodaya. It covers 0 of 112 minutes on the 26th and 72 of 112 on the 27th.

    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 2368 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 1901: Sunday 27 January.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 1901 falls on Sunday 27 January. Saptamī runs from 08:57 on Sat 26 Jan to 06:50 on Sun 27 Jan and covers 72 of 112 minutes of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1901/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 27 Jan
Ahargaṇa, classicalDisc centre, no refractionSun 27 Jan
compat-drikpanchangComparison profileSun 27 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 26thCoveredAruṇodaya 27thCoveredRuled
Los Angeles16:57 → 14:5005:06109 min05:050 min26 Jan
Chicago18:57 → 16:5005:16114 min05:150 min26 Jan
Jersey City19:57 → 17:5005:20113 min05:190 min26 Jan
Port of Spain20:57 → 18:5004:5199 min04:510 min26 Jan
London00:57 → 22:5005:47122 min05:460 min26 Jan
Durban02:27 → 00:2003:2683 min03:270 min26 Jan
Dubai04:38 → 02:3105:01105 min05:000 min26 Jan
Delhi06:18 → 04:1105:1746 min05:170 min26 Jan
Kolkata06:18 → 04:1104:250 min04:250 min26 Jan
Singapore07:52 → 05:4504:350 min04:3570 min27 Jan
Sydney10:57 → 08:5003:500 min03:5081 min27 Jan
Suva12:52 → 10:4504:160 min04:1788 min27 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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