Ruling · Ratha Saptamī · 2012

Monday 30 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 406 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 Monday 30 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

Dawn of Tuesday 31 January

Saptamī is absent from aruṇodaya. Not taken.

05:36 aruṇodaya beginssunrise 07:26
05:1205:3606:0006:2406:4807:1207:3608:00

0 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 20:15 on Sun 29 Jan to 22:49 on Mon 30 Jan.

    2012-01-29T12:14:56Z → 2012-01-30T14:49:24Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:36–07:27 on the 30th, 05:36–07:26 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 111 of 111 minutes on the 30th and 0 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 24375 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 2012: Monday 30 January.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 2012 falls on Monday 30 January. Saptamī runs from 20:15 on Sun 29 Jan to 22:49 on Mon 30 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2012/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 30 Jan
Ahargaṇa, classicalDisc centre, no refractionMon 30 Jan
compat-drikpanchangComparison profileMon 30 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 29thCoveredAruṇodaya 30thCoveredRuled
Los Angeles04:15 → 06:4905:04109 min05:04106 min29 Jan
Chicago06:15 → 08:4905:1452 min05:13113 min30 Jan
Jersey City07:15 → 09:4905:180 min05:17112 min30 Jan
Port of Spain08:15 → 10:4904:510 min04:5199 min30 Jan
London12:15 → 14:4905:440 min05:43120 min30 Jan
Durban14:15 → 16:4903:580 min03:5984 min30 Jan
Dubai16:15 → 18:4905:190 min05:19104 min30 Jan
Delhi17:45 → 20:1905:250 min05:25106 min30 Jan
Kolkata17:45 → 20:1904:340 min04:34103 min30 Jan
Singapore20:15 → 22:4905:400 min05:4196 min30 Jan
Sydney23:15 → 01:4904:520 min04:5382 min30 Jan
Suva00:15 → 02:4904:220 min04:2389 min30 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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