Ruling · Ratha Saptamī · 2098

Saturday 8 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 159 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.

05:30 aruṇodaya beginssunrise 07:18
05:0605:3005:5406:1806:4207:0607:30

108 of 108 minutes covered

Dawn of Sunday 9 February

Saptamī is absent from aruṇodaya. Not taken.

05:29 aruṇodaya beginssunrise 07:17
05:0505:2905:5306:1706:4107:0507:29

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 02:51 on Sat 8 Feb to 02:39 on Sun 9 Feb.

    2098-02-07T18:50:55Z → 2098-02-08T18:38:56Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:30–07:18 on the 8th, 05:29–07:17 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 108 of 108 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 9522 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 2098: Saturday 8 February.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 2098 falls on Saturday 8 February. Saptamī runs from 02:51 on Sat 8 Feb to 02:39 on Sun 9 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2098/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 Angeles10:51 → 10:3904:590 min04:58106 min8 Feb
Chicago12:51 → 12:3905:060 min05:06109 min8 Feb
Jersey City13:51 → 13:3905:110 min05:10109 min8 Feb
Port of Spain14:51 → 14:3904:500 min04:5098 min8 Feb
London18:51 → 18:3905:330 min05:32115 min8 Feb
Durban20:51 → 20:3904:050 min04:0686 min8 Feb
Dubai22:51 → 22:3905:160 min05:15103 min8 Feb
Delhi00:21 → 00:0905:220 min05:21104 min8 Feb
Kolkata00:21 → 00:0904:310 min04:31102 min8 Feb
Singapore02:51 → 02:3905:420 min05:4296 min8 Feb
Sydney05:51 → 05:3905:000 min05:0033 min9 Feb
Suva06:51 → 06:3904:270 min04:270 min9 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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