Ruling · Ratha Saptamī · 2034

Thursday 26 January

Boundaryin Baoding, under the Rashtriya Panchang method. Saptamī reaches aruṇodaya on neither day and the rule does not say what then. Say “contested”.

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 Thursday 26 January

Taken. Saptamī reaches neither dawn; this is the day it falls on.

05:38 aruṇodaya beginssunrise 07:30
Saptamī begins 07:32:43
05:1405:3806:0206:2606:5007:1407:3808:02

0 of 112 minutes covered

Dawn of Friday 27 January

Saptamī is absent from aruṇodaya. Not taken.

05:37 aruṇodaya beginssunrise 07:29
Saptamī ends 05:31:47
05:1305:3706:0106:2506:4907:1307:3708:01

0 of 112 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 07:33 on Thu 26 Jan to 05:32 on Fri 27 Jan.

    2034-01-25T23:32:44Z → 2034-01-26T21:31:48Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:38–07:30 on the 26th, 05:37–07:29 on the 27th.

    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 112 minutes on the 26th and 0 of 112 on the 27th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

    Neither dawn qualifies. The day the tithi falls on is taken.

    priority: unstated → tithi-day · margin 183 s < 300 s

  5. 05

    Ruling

    Ratha Saptamī, Baoding, 2034: Thursday 26 January.

    confidence: boundary (margin, absent-unstated)

Say it like this

In Baoding, Ratha Saptamī 2034 falls on Thursday 26 January. Saptamī runs from 07:33 on Thu 26 Jan to 05:32 on Fri 27 Jan, and reaches aruṇodaya on neither day. It is 3 min 03 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2034/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 26 Jan
Ahargaṇa, classicalDisc centre, no refractionThu 26 Jan
compat-drikpanchangComparison profileThu 26 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 25thCoveredAruṇodaya 26thCoveredRuled
Los Angeles15:33 → 13:3205:050 min05:05109 min26 Jan
Chicago17:33 → 15:3205:160 min05:15114 min26 Jan
Jersey City18:33 → 16:3205:190 min05:19113 min26 Jan
Port of Spain19:33 → 17:3204:510 min04:5199 min26 Jan
London23:33 → 21:3205:470 min05:46121 min26 Jan
Durban01:33 → 23:3203:560 min03:5783 min26 Jan
Dubai03:33 → 01:3205:190 min05:19105 min26 Jan
Delhi05:03 → 03:0205:260 min05:26106 min26 Jan
Kolkata05:03 → 03:0204:340 min04:3475 min26 Jan
Singapore07:33 → 05:3205:400 min05:400 min26 Jan
Sydney10:33 → 08:3204:490 min04:500 min27 Jan
Suva11:33 → 09:3204:210 min04:210 min27 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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