Ruling · Ratha Saptamī · 1916

Thursday 10 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 535 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 Wednesday 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

Dawn of Thursday 10 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

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

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 16:14 on Wed 9 Feb to 17:28 on Thu 10 Feb.

    1916-02-09T08:14:11Z → 1916-02-10T09:28:04Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:30–07:19 on the 9th, 05:30–07:18 on the 10th.

    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 108 minutes on the 9th and 108 of 108 on the 10th.

    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 32127 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 1916: Thursday 10 February.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 1916 falls on Thursday 10 February. Saptamī runs from 16:14 on Wed 9 Feb to 17:28 on Thu 10 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1916/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 10 Feb
Ahargaṇa, classicalDisc centre, no refractionThu 10 Feb
compat-drikpanchangComparison profileThu 10 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 9thCoveredAruṇodaya 10thCoveredRuled
Los Angeles00:14 → 01:2804:59106 min04:580 min9 Feb
Chicago02:14 → 03:2805:06110 min05:050 min9 Feb
Jersey City03:14 → 04:2805:10109 min05:100 min9 Feb
Port of Spain04:14 → 05:2804:5098 min04:5038 min9 Feb
London08:14 → 09:2805:330 min05:31115 min10 Feb
Durban10:14 → 11:2804:050 min04:0686 min10 Feb
Dubai11:55 → 13:0904:570 min04:56103 min10 Feb
Delhi13:44 → 14:5805:220 min05:21104 min10 Feb
Kolkata13:44 → 14:5804:310 min04:31102 min10 Feb
Singapore15:14 → 16:2804:420 min04:4296 min10 Feb
Sydney18:14 → 19:2804:000 min04:0084 min10 Feb
Suva20:14 → 21:2804:270 min04:2790 min10 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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