Ruling · Ratha Saptamī · 1952

Saturday 2 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 500 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 Friday 1 February

Saptamī is absent from aruṇodaya. Not taken.

05:35 aruṇodaya beginssunrise 07:26
05:1105:3505:5906:2306:4707:1107:3507:59

0 of 111 minutes covered

Dawn of Saturday 2 February

Taken. The only dawn Saptamī reaches.

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

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 15:47 on Fri 1 Feb to 15:45 on Sat 2 Feb.

    1952-02-01T07:47:11Z → 1952-02-02T07:45:00Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:35–07:26 on the 1st, 05:35–07:25 on the 2nd.

    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 111 minutes on the 1st and 110 of 110 on the 2nd.

    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 29988 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 1952: Saturday 2 February.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 1952 falls on Saturday 2 February. Saptamī runs from 15:47 on Fri 1 Feb to 15:45 on Sat 2 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1952/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 2 Feb
Ahargaṇa, classicalDisc centre, no refractionSat 2 Feb
compat-drikpanchangComparison profileSat 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 Angeles23:47 → 23:4505:03108 min05:030 min1 Feb
Chicago01:47 → 01:4505:12112 min05:120 min1 Feb
Jersey City02:47 → 02:4505:16112 min05:160 min1 Feb
Port of Spain03:47 → 03:4504:5199 min04:510 min1 Feb
London07:47 → 07:4505:420 min05:41119 min2 Feb
Durban09:47 → 09:4504:000 min04:0184 min2 Feb
Dubai11:47 → 11:4505:180 min05:18104 min2 Feb
Delhi13:17 → 13:1505:250 min05:24105 min2 Feb
Kolkata13:17 → 13:1504:330 min04:33103 min2 Feb
Singapore15:17 → 15:1505:110 min05:1196 min2 Feb
Sydney17:47 → 17:4503:540 min03:5582 min2 Feb
Suva19:47 → 19:4504:240 min04:2489 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

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