Ruling · Ratha Saptamī · 1964

Tuesday 21 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 106 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 21 January

Taken. The only dawn Saptamī reaches.

05:40 aruṇodaya beginssunrise 07:34
05:1605:4006:0406:2806:5207:1607:4008:04

113 of 113 minutes covered

Dawn of Wednesday 22 January

Saptamī is absent from aruṇodaya. Not taken.

05:40 aruṇodaya beginssunrise 07:33
05:1605:4006:0406:2806:5207:1607:4008:04

0 of 113 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 03:55 on Tue 21 Jan to 02:22 on Wed 22 Jan.

    1964-01-20T19:54:44Z → 1964-01-21T18:22:16Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:40–07:34 on the 21st, 05:40–07:33 on the 22nd.

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

  3. 03

    Rule

    Saptamī must be present during aruṇodaya. It covers 113 of 113 minutes on the 21st and 0 of 113 on the 22nd.

    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 6334 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 1964: Tuesday 21 January.

    confidence: determinate

Say it like this

In Baoding, Ratha Saptamī 1964 falls on Tuesday 21 January. Saptamī runs from 03:55 on Tue 21 Jan to 02:22 on Wed 22 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1964/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 21 Jan
Ahargaṇa, classicalDisc centre, no refractionTue 21 Jan
compat-drikpanchangComparison profileTue 21 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 20thCoveredAruṇodaya 21stCoveredRuled
Los Angeles11:55 → 10:2205:070 min05:07110 min21 Jan
Chicago13:55 → 12:2205:190 min05:18115 min21 Jan
Jersey City14:55 → 13:2205:220 min05:22114 min21 Jan
Port of Spain15:55 → 14:2204:500 min04:5099 min21 Jan
London19:55 → 18:2205:520 min05:51124 min21 Jan
Durban21:55 → 20:2203:520 min03:5282 min21 Jan
Dubai23:55 → 22:2205:200 min05:20106 min21 Jan
Delhi01:25 → 23:5205:270 min05:27107 min21 Jan
Kolkata01:25 → 23:5204:350 min04:35104 min21 Jan
Singapore03:25 → 01:5205:080 min05:0996 min21 Jan
Sydney05:55 → 04:2203:440 min03:450 min22 Jan
Suva07:55 → 06:2204:180 min04:180 min22 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

About Ahargaṇa