Ruling · Ratha Saptamī · 1922

Saturday 4 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 311 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 Saturday 4 February

Taken. The only dawn Saptamī reaches.

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

110 of 110 minutes covered

Dawn of Sunday 5 February

Saptamī is absent from aruṇodaya. Not taken.

05:33 aruṇodaya beginssunrise 07:22
05:0905:3305:5706:2106:4507:0907:33

0 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 22:50 on Fri 3 Feb to 00:22 on Sun 5 Feb.

    1922-02-03T14:49:56Z → 1922-02-04T16:22:18Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:33–07:23 on the 4th, 05:33–07:22 on the 5th.

    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 4th and 0 of 109 on the 5th.

    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 18630 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 1922: Saturday 4 February.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 1922 falls on Saturday 4 February. Saptamī runs from 22:50 on Fri 3 Feb to 00:22 on Sun 5 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1922/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 4 Feb
Ahargaṇa, classicalDisc centre, no refractionSat 4 Feb
compat-drikpanchangComparison profileSat 4 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 3rdCoveredAruṇodaya 4thCoveredRuled
Los Angeles06:50 → 08:2205:020 min05:02107 min4 Feb
Chicago08:50 → 10:2205:110 min05:10111 min4 Feb
Jersey City09:50 → 11:2205:150 min05:14111 min4 Feb
Port of Spain10:50 → 12:2204:510 min04:5199 min4 Feb
London14:50 → 16:2205:390 min05:38118 min4 Feb
Durban16:50 → 18:2204:020 min04:0285 min4 Feb
Dubai18:50 → 20:2205:180 min05:17104 min4 Feb
Delhi20:20 → 21:5205:240 min05:24105 min4 Feb
Kolkata20:20 → 21:5204:330 min04:33103 min4 Feb
Singapore21:50 → 23:2204:410 min04:4196 min4 Feb
Sydney00:50 → 02:2203:560 min03:5683 min4 Feb
Suva02:50 → 04:2204:250 min04:2589 min4 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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