Ruling · Ratha Saptamī · 1927

Tuesday 8 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 418 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 Tuesday 8 February

Taken. The only dawn Saptamī reaches.

05:31 aruṇodaya beginssunrise 07:19
05:0705:3105:5506:1906:4307:0707:31

109 of 109 minutes covered

Dawn of Wednesday 9 February

Saptamī is absent from aruṇodaya. Not taken.

05:30 aruṇodaya beginssunrise 07:18
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 22:33 on Mon 7 Feb to 20:38 on Tue 8 Feb.

    1927-02-07T14:33:09Z → 1927-02-08T12:38:10Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:31–07:19 on the 8th, 05:30–07:18 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 25058 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 1927: Tuesday 8 February.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 1927 falls on Tuesday 8 February. Saptamī runs from 22:33 on Mon 7 Feb to 20:38 on Tue 8 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1927/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 8 Feb
Ahargaṇa, classicalDisc centre, no refractionTue 8 Feb
compat-drikpanchangComparison profileTue 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 Angeles06:33 → 04:3805:0013 min04:590 min7 Feb
Chicago08:33 → 06:3805:080 min05:0791 min8 Feb
Jersey City09:33 → 07:3805:120 min05:11109 min8 Feb
Port of Spain10:33 → 08:3804:510 min04:5198 min8 Feb
London14:33 → 12:3805:350 min05:34116 min8 Feb
Durban16:33 → 14:3804:040 min04:0585 min8 Feb
Dubai18:33 → 16:3805:160 min05:16103 min8 Feb
Delhi20:03 → 18:0805:220 min05:22104 min8 Feb
Kolkata20:03 → 18:0804:320 min04:31102 min8 Feb
Singapore21:33 → 19:3804:410 min04:4296 min8 Feb
Sydney00:33 → 22:3803:590 min03:5984 min8 Feb
Suva02:33 → 00:3804:260 min04:2790 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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