Ruling · Ratha Saptamī · 1908

Saturday 8 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 298 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 8 February

Taken. The only dawn Saptamī reaches.

05:31 aruṇodaya beginssunrise 07:20
05:0705:3105:5506:1906:4307:0707:31

109 of 109 minutes covered

Dawn of Sunday 9 February

Saptamī is absent from aruṇodaya. Not taken.

05:30 aruṇodaya beginssunrise 07:19
05:0605:3005:5406:1806:4207:0607:30

0 of 108 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 00:33 on Sat 8 Feb to 00:16 on Sun 9 Feb.

    1908-02-07T16:32:47Z → 1908-02-08T16:16:25Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:31–07:20 on the 8th, 05:30–07:19 on the 9th.

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

  3. 03

    Rule

    Saptamī must be present during aruṇodaya. It covers 109 of 109 minutes on the 8th and 0 of 108 on the 9th.

    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 17901 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 1908: Saturday 8 February.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 1908 falls on Saturday 8 February. Saptamī runs from 00:33 on Sat 8 Feb to 00:16 on Sun 9 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1908/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 8 Feb
Ahargaṇa, classicalDisc centre, no refractionSat 8 Feb
compat-drikpanchangComparison profileSat 8 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 7thCoveredAruṇodaya 8thCoveredRuled
Los Angeles08:33 → 08:1605:000 min05:00106 min8 Feb
Chicago10:33 → 10:1605:080 min05:07110 min8 Feb
Jersey City11:33 → 11:1605:120 min05:11109 min8 Feb
Port of Spain12:33 → 12:1604:510 min04:5198 min8 Feb
London16:33 → 16:1605:350 min05:34116 min8 Feb
Durban18:33 → 18:1604:040 min04:0585 min8 Feb
Dubai20:14 → 19:5704:580 min04:57103 min8 Feb
Delhi22:03 → 21:4605:230 min05:22104 min8 Feb
Kolkata22:03 → 21:4604:320 min04:32102 min8 Feb
Singapore23:33 → 23:1604:420 min04:4296 min8 Feb
Sydney02:33 → 02:1603:580 min03:5983 min8 Feb
Suva04:28 → 04:1104:210 min04:2283 min8 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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