Ruling · Ratha Saptamī · 2045

Wednesday 25 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 262 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 25 January

Taken. The only dawn Saptamī reaches.

05:38 aruṇodaya beginssunrise 07:30
05:1405:3806:0206:2606:5007:1407:3808:02

112 of 112 minutes covered

Dawn of Thursday 26 January

Saptamī is absent from aruṇodaya. Not taken.

05:38 aruṇodaya beginssunrise 07:29
05:1405:3806:0206:2606:5007:1407:3808:02

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 00:55 on Wed 25 Jan to 01:16 on Thu 26 Jan.

    2045-01-24T16:55:01Z → 2045-01-25T17:15:48Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:38–07:30 on the 25th, 05:38–07:29 on the 26th.

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

  3. 03

    Rule

    Saptamī must be present during aruṇodaya. It covers 112 of 112 minutes on the 25th and 0 of 112 on the 26th.

    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 15714 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 2045: Wednesday 25 January.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 2045 falls on Wednesday 25 January. Saptamī runs from 00:55 on Wed 25 Jan to 01:16 on Thu 26 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2045/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 25 Jan
Ahargaṇa, classicalDisc centre, no refractionWed 25 Jan
compat-drikpanchangComparison profileWed 25 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 24thCoveredAruṇodaya 25thCoveredRuled
Los Angeles08:55 → 09:1605:060 min05:05109 min25 Jan
Chicago10:55 → 11:1605:160 min05:16114 min25 Jan
Jersey City11:55 → 12:1605:200 min05:19113 min25 Jan
Port of Spain12:55 → 13:1604:510 min04:5199 min25 Jan
London16:55 → 17:1605:480 min05:47122 min25 Jan
Durban18:55 → 19:1603:550 min03:5683 min25 Jan
Dubai20:55 → 21:1605:190 min05:19105 min25 Jan
Delhi22:25 → 22:4605:260 min05:26107 min25 Jan
Kolkata22:25 → 22:4604:340 min04:34104 min25 Jan
Singapore00:55 → 01:1605:400 min05:4096 min25 Jan
Sydney03:55 → 04:1604:490 min04:4981 min25 Jan
Suva04:55 → 05:1604:200 min04:2154 min26 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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