Ruling · Ratha Saptamī · 2052

Wednesday 7 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 436 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 Tuesday 6 February

Saptamī is absent from aruṇodaya. Not taken.

05:32 aruṇodaya beginssunrise 07:21
05:0805:3205:5606:2006:4407:0807:32

0 of 109 minutes covered

Dawn of Wednesday 7 February

Taken. The only dawn Saptamī reaches.

05:31 aruṇodaya beginssunrise 07:20
05:0705:3105:5506:1906:4307:0707:31

109 of 109 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 16:36 on Tue 6 Feb to 14:36 on Wed 7 Feb.

    2052-02-06T08:36:13Z → 2052-02-07T06:35:58Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:32–07:21 on the 6th, 05:31–07:20 on the 7th.

    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 109 minutes on the 6th and 109 of 109 on the 7th.

    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 26187 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 2052: Wednesday 7 February.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 2052 falls on Wednesday 7 February. Saptamī runs from 16:36 on Tue 6 Feb to 14:36 on Wed 7 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2052/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 7 Feb
Ahargaṇa, classicalDisc centre, no refractionWed 7 Feb
compat-drikpanchangComparison profileWed 7 Feb
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 6thCoveredAruṇodaya 7thCoveredRuled
Los Angeles00:36 → 22:3605:00107 min04:590 min6 Feb
Chicago02:36 → 00:3605:08110 min05:070 min6 Feb
Jersey City03:36 → 01:3605:12110 min05:110 min6 Feb
Port of Spain04:36 → 02:3604:5198 min04:500 min6 Feb
London08:36 → 06:3605:350 min05:3462 min7 Feb
Durban10:36 → 08:3604:040 min04:0585 min7 Feb
Dubai12:36 → 10:3605:160 min05:16103 min7 Feb
Delhi14:06 → 12:0605:220 min05:22104 min7 Feb
Kolkata14:06 → 12:0604:320 min04:31102 min7 Feb
Singapore16:36 → 14:3605:410 min05:4196 min7 Feb
Sydney19:36 → 17:3604:580 min04:5983 min7 Feb
Suva20:36 → 18:3604:260 min04:2789 min7 Feb
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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