Ruling · Ratha Saptamī · 1934

Monday 22 January

Boundaryin Baoding, under the Rashtriya Panchang method. Both dawns qualify and the rule does not say which to take. Say “contested”.

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 Sunday 21 January

Qualifies with 8 of 113 minutes. Not taken.

05:40 aruṇodaya beginssunrise 07:34
Saptamī begins 07:25:47
05:1605:4006:0406:2806:5207:1607:4008:04

8 of 113 minutes covered, the last 8

Dawn of Monday 22 January

Taken. Both dawns qualify; the rule is silent, and this one is covered longer.

05:40 aruṇodaya beginssunrise 07:33
Saptamī ends 07:30:27
05:1605:4006:0406:2806:5207:1607:4008:04

110 of 113 minutes covered, the first 110

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

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 07:26 on Sun 21 Jan to 07:30 on Mon 22 Jan.

    1934-01-20T23:25:48Z → 1934-01-21T23:30:28Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:40–07:34 on the 21st, 05:40–07:33 on the 22nd.

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

  3. 03

    Rule

    Saptamī must be present during aruṇodaya. It covers 8 of 113 minutes on the 21st and 110 of 113 on the 22nd.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

    Both dawns qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 151 s < 300 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 1934: Monday 22 January.

    confidence: boundary (margin, tie-break-unstated)

Say it like this

In Baoding, Ratha Saptamī 1934 falls on Monday 22 January. Saptamī runs from 07:26 on Sun 21 Jan to 07:30 on Mon 22 Jan and covers 110 of 113 minutes of aruṇodaya that dawn. It also reaches the previous dawn for 8 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 2 min 31 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1934/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 22 Jan
Ahargaṇa, classicalDisc centre, no refractionMon 22 Jan
compat-drikpanchangComparison profileMon 22 Jan
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 20thCoveredAruṇodaya 21stCoveredRuled
Los Angeles15:26 → 15:3005:070 min05:07110 min21 Jan
Chicago17:26 → 17:3005:190 min05:18115 min21 Jan
Jersey City18:26 → 18:3005:220 min05:22114 min21 Jan
Port of Spain19:26 → 19:3004:500 min04:5099 min21 Jan
London23:26 → 23:3005:520 min05:51124 min21 Jan
Durban01:26 → 01:3003:520 min03:5382 min21 Jan
Dubai03:26 → 03:3005:200 min05:20106 min21 Jan
Delhi04:56 → 05:0005:270 min05:27107 min21 Jan
Kolkata04:56 → 05:0004:350 min04:3583 min21 Jan
Singapore06:46 → 06:5004:580 min04:590 min22 Jan
Sydney09:26 → 09:3003:450 min03:450 min22 Jan
Suva11:26 → 11:3004:180 min04:190 min22 Jan
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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