Ruling · Ratha Saptamī · 2070

Monday 17 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 228 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 17 February

Taken. The only dawn Saptamī reaches.

05:22 aruṇodaya beginssunrise 07:07
04:5805:2205:4606:1006:3406:5807:22

105 of 105 minutes covered

Dawn of Tuesday 18 February

Saptamī is absent from aruṇodaya. Not taken.

05:21 aruṇodaya beginssunrise 07:06
04:5705:2105:4506:0906:3306:5707:21

0 of 105 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 01:34 on Mon 17 Feb to 23:35 on Mon 17 Feb.

    2070-02-16T17:34:17Z → 2070-02-17T15:34:47Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:22–07:07 on the 17th, 05:21–07:06 on the 18th.

    arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Saptamī must be present during aruṇodaya. It covers 105 of 105 minutes on the 17th and 0 of 105 on the 18th.

    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 13655 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 2070: Monday 17 February.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 2070 falls on Monday 17 February. Saptamī runs from 01:34 on Mon 17 Feb to 23:35 on Mon 17 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2070/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 17 Feb
Ahargaṇa, classicalDisc centre, no refractionMon 17 Feb
compat-drikpanchangComparison profileMon 17 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 16thCoveredAruṇodaya 17thCoveredRuled
Los Angeles09:34 → 07:3504:530 min04:52104 min17 Feb
Chicago11:34 → 09:3504:580 min04:57106 min17 Feb
Jersey City12:34 → 10:3505:020 min05:01106 min17 Feb
Port of Spain13:34 → 11:3504:490 min04:4898 min17 Feb
London17:34 → 15:3505:210 min05:19111 min17 Feb
Durban19:34 → 17:3504:100 min04:1188 min17 Feb
Dubai21:34 → 19:3505:110 min05:11101 min17 Feb
Delhi23:04 → 21:0505:160 min05:16102 min17 Feb
Kolkata23:04 → 21:0504:270 min04:27100 min17 Feb
Singapore01:34 → 23:3505:410 min05:4195 min17 Feb
Sydney04:34 → 02:3505:060 min05:0686 min17 Feb
Suva05:34 → 03:3504:300 min04:3027 min17 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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