Ruling · Ratha Saptamī · 2009

Monday 2 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 523 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 Monday 2 February

Taken. The only dawn Saptamī reaches.

05:34 aruṇodaya beginssunrise 07:24
05:1005:3405:5806:2206:4607:1007:3407:58

110 of 110 minutes covered

Dawn of Tuesday 3 February

Saptamī is absent from aruṇodaya. Not taken.

05:33 aruṇodaya beginssunrise 07:23
05:0905:3305:5706:2106:4507:0907:3307:57

0 of 110 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 20:51 on Sun 1 Feb to 19:54 on Mon 2 Feb.

    2009-02-01T12:50:59Z → 2009-02-02T11:53:46Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:34–07:24 on the 2nd, 05:33–07:23 on the 3rd.

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

  3. 03

    Rule

    Saptamī must be present during aruṇodaya. It covers 110 of 110 minutes on the 2nd and 0 of 110 on the 3rd.

    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 31381 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 2009: Monday 2 February.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 2009 falls on Monday 2 February. Saptamī runs from 20:51 on Sun 1 Feb to 19:54 on Mon 2 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2009/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 2 Feb
Ahargaṇa, classicalDisc centre, no refractionMon 2 Feb
compat-drikpanchangComparison profileMon 2 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 1stCoveredAruṇodaya 2ndCoveredRuled
Los Angeles04:51 → 03:5405:02108 min05:020 min1 Feb
Chicago06:51 → 05:5405:1112 min05:1143 min2 Feb
Jersey City07:51 → 06:5405:150 min05:1599 min2 Feb
Port of Spain08:51 → 07:5404:510 min04:5199 min2 Feb
London12:51 → 11:5405:400 min05:39118 min2 Feb
Durban14:51 → 13:5404:010 min04:0284 min2 Feb
Dubai16:51 → 15:5405:180 min05:18104 min2 Feb
Delhi18:21 → 17:2405:240 min05:24105 min2 Feb
Kolkata18:21 → 17:2404:330 min04:33103 min2 Feb
Singapore20:51 → 19:5405:410 min05:4196 min2 Feb
Sydney23:51 → 22:5404:550 min04:5582 min2 Feb
Suva00:51 → 23:5404:240 min04:2589 min2 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

About Ahargaṇa