Ruling · Ratha Saptamī · 1925

Saturday 31 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 240 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 30 January

Saptamī is absent from aruṇodaya. Not taken.

05:36 aruṇodaya beginssunrise 07:27
05:1205:3606:0006:2406:4807:1207:3608:00

0 of 111 minutes covered

Dawn of Saturday 31 January

Taken. The only dawn Saptamī reaches.

05:36 aruṇodaya beginssunrise 07:27
05:1205:3606:0006:2406:4807:1207:3608:00

111 of 111 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 11:27 on Fri 30 Jan to 12:07 on Sat 31 Jan.

    1925-01-30T03:27:15Z → 1925-01-31T04:06:31Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:36–07:27 on the 30th, 05:36–07:27 on the 31st.

    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 111 minutes on the 30th and 111 of 111 on the 31st.

    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 14394 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 1925: Saturday 31 January.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 1925 falls on Saturday 31 January. Saptamī runs from 11:27 on Fri 30 Jan to 12:07 on Sat 31 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1925/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 31 Jan
Ahargaṇa, classicalDisc centre, no refractionSat 31 Jan
compat-drikpanchangComparison profileSat 31 Jan
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 30thCoveredAruṇodaya 31stCoveredRuled
Los Angeles19:27 → 20:0705:04108 min05:030 min30 Jan
Chicago21:27 → 22:0705:13113 min05:130 min30 Jan
Jersey City22:27 → 23:0705:17112 min05:170 min30 Jan
Port of Spain23:27 → 00:0704:5199 min04:510 min30 Jan
London03:27 → 04:0705:43120 min05:420 min30 Jan
Durban05:27 → 06:0703:590 min04:0084 min31 Jan
Dubai07:27 → 08:0705:190 min05:19104 min31 Jan
Delhi08:57 → 09:3705:250 min05:25106 min31 Jan
Kolkata08:57 → 09:3704:340 min04:34103 min31 Jan
Singapore10:27 → 11:0704:410 min04:4196 min31 Jan
Sydney13:27 → 14:0703:530 min03:5482 min31 Jan
Suva15:27 → 16:0704:230 min04:2489 min31 Jan
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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