Ruling · Ratha Saptamī · 2085

Thursday 1 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 190 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 31 January

Saptamī is absent from aruṇodaya. Not taken.

05:35 aruṇodaya beginssunrise 07:25
05:1105:3505:5906:2306:4707:1107:3507:59

0 of 110 minutes covered

Dawn of Thursday 1 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

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

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 11:08 on Wed 31 Jan to 10:35 on Thu 1 Feb.

    2085-01-31T03:08:10Z → 2085-02-01T02:34:54Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:35–07:25 on the 31st, 05:34–07:24 on the 1st.

    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 110 minutes on the 31st and 110 of 110 on the 1st.

    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 11426 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 2085: Thursday 1 February.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 2085 falls on Thursday 1 February. Saptamī runs from 11:08 on Wed 31 Jan to 10:35 on Thu 1 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2085/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 1 Feb
Ahargaṇa, classicalDisc centre, no refractionThu 1 Feb
compat-drikpanchangComparison profileThu 1 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 31stCoveredAruṇodaya 1stCoveredRuled
Los Angeles19:08 → 18:3505:03108 min05:020 min31 Jan
Chicago21:08 → 20:3505:12112 min05:110 min31 Jan
Jersey City22:08 → 21:3505:16111 min05:150 min31 Jan
Port of Spain23:08 → 22:3504:5199 min04:510 min31 Jan
London03:08 → 02:3505:41119 min05:400 min31 Jan
Durban05:08 → 04:3504:0117 min04:0134 min1 Feb
Dubai07:08 → 06:3505:180 min05:1877 min1 Feb
Delhi08:38 → 08:0505:240 min05:24105 min1 Feb
Kolkata08:38 → 08:0504:330 min04:33103 min1 Feb
Singapore11:08 → 10:3505:410 min05:4196 min1 Feb
Sydney14:08 → 13:3504:540 min04:5582 min1 Feb
Suva15:08 → 14:3504:240 min04:2589 min1 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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