Ruling · Ratha Saptamī · 2017

Friday 3 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 141 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 Friday 3 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 Saturday 4 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 03:12 on Fri 3 Feb to 01:20 on Sat 4 Feb.

    2017-02-02T19:12:30Z → 2017-02-03T17:19:58Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:33–07:23 on the 3rd, 05:33–07:22 on the 4th.

    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 3rd and 0 of 109 on the 4th.

    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 8447 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 2017: Friday 3 February.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 2017 falls on Friday 3 February. Saptamī runs from 03:12 on Fri 3 Feb to 01:20 on Sat 4 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2017/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 3 Feb
Ahargaṇa, classicalDisc centre, no refractionFri 3 Feb
compat-drikpanchangComparison profileFri 3 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 2ndCoveredAruṇodaya 3rdCoveredRuled
Los Angeles11:12 → 09:2005:020 min05:01107 min3 Feb
Chicago13:12 → 11:2005:100 min05:10111 min3 Feb
Jersey City14:12 → 12:2005:140 min05:14111 min3 Feb
Port of Spain15:12 → 13:2004:510 min04:5199 min3 Feb
London19:12 → 17:2005:390 min05:38118 min3 Feb
Durban21:12 → 19:2004:020 min04:0285 min3 Feb
Dubai23:12 → 21:2005:180 min05:17104 min3 Feb
Delhi00:42 → 22:5005:240 min05:23105 min3 Feb
Kolkata00:42 → 22:5004:330 min04:32103 min3 Feb
Singapore03:12 → 01:2005:410 min05:4196 min3 Feb
Sydney06:12 → 04:2004:550 min04:566 min3 Feb
Suva07:12 → 05:2004:250 min04:250 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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