Ruling · Ratha Saptamī · 2055

Thursday 4 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 552 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 3 February

Saptamī is absent from aruṇodaya. Not taken.

05:33 aruṇodaya beginssunrise 07:23
05:0905:3305:5706:2106:4507:0907:33

0 of 110 minutes covered

Dawn of Thursday 4 February

Taken. The only dawn Saptamī reaches.

05:33 aruṇodaya beginssunrise 07:22
05:0905:3305:5706:2106:4507:0907:33

109 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 16:35 on Wed 3 Feb to 18:21 on Thu 4 Feb.

    2055-02-03T08:34:42Z → 2055-02-04T10:21:16Z

  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 0 of 110 minutes on the 3rd and 109 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 33090 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 2055: Thursday 4 February.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 2055 falls on Thursday 4 February. Saptamī runs from 16:35 on Wed 3 Feb to 18:21 on Thu 4 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2055/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 4 Feb
Ahargaṇa, classicalDisc centre, no refractionThu 4 Feb
compat-drikpanchangComparison profileThu 4 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 3rdCoveredAruṇodaya 4thCoveredRuled
Los Angeles00:35 → 02:2105:01107 min05:010 min3 Feb
Chicago02:35 → 04:2105:10111 min05:090 min3 Feb
Jersey City03:35 → 05:2105:14111 min05:138 min3 Feb
Port of Spain04:35 → 06:2104:5199 min04:5191 min3 Feb
London08:35 → 10:2105:380 min05:37118 min4 Feb
Durban10:35 → 12:2104:020 min04:0385 min4 Feb
Dubai12:35 → 14:2105:170 min05:17103 min4 Feb
Delhi14:05 → 15:5105:230 min05:23105 min4 Feb
Kolkata14:05 → 15:5104:320 min04:32103 min4 Feb
Singapore16:35 → 18:2105:410 min05:4196 min4 Feb
Sydney19:35 → 21:2104:560 min04:5783 min4 Feb
Suva20:35 → 22:2104:250 min04:2589 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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