Ruling · Ratha Saptamī · 2027

Saturday 13 February

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 140 minutes.

Decide it for

23°11′ N 75°47′ E · Asia/Kolkata · GeoNames 1253914

The two dawns

One ghaṭī is 24 minutes. Aruṇodaya is 2 muhūrtas before sunrise.

Dawn of Saturday 13 February

Taken. The only dawn Saptamī reaches.

05:20 aruṇodaya beginssunrise 07:01
04:5605:2005:4406:0806:3206:5607:20

101 of 101 minutes covered

Dawn of Sunday 14 February

Saptamī is absent from aruṇodaya. Not taken.

05:19 aruṇodaya beginssunrise 07:01
04:5505:1905:4306:0706:3106:5507:19

0 of 101 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 03:00 on Sat 13 Feb to 02:07 on Sun 14 Feb.

    2027-02-12T21:29:49Z → 2027-02-13T20:37:16Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:20–07:01 on the 13th, 05:19–07:01 on the 14th.

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

  3. 03

    Rule

    Saptamī must be present during aruṇodaya. It covers 101 of 101 minutes on the 13th and 0 of 101 on the 14th.

    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 8396 s

  5. 05

    Ruling

    Ratha Saptamī, Ujjain, 2027: Saturday 13 February.

    confidence: determinate

Say it like this

In Ujjain, Ratha Saptamī 2027 falls on Saturday 13 February. Saptamī runs from 03:00 on Sat 13 Feb to 02:07 on Sun 14 Feb and covers all of aruṇodaya that dawn.

ahargana.org/ujjain/festivals/2027/ratha-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 13 Feb
Ahargaṇa, classicalDisc centre, no refractionSat 13 Feb
compat-drikpanchangComparison profileSat 13 Feb
No institution has a recorded ruling for Ujjain.

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 12thCoveredAruṇodaya 13thCoveredRuled
Los Angeles13:30 → 12:3704:560 min04:55105 min13 Feb
Chicago15:30 → 14:3705:020 min05:01108 min13 Feb
Jersey City16:30 → 15:3705:070 min05:06108 min13 Feb
Port of Spain17:30 → 16:3704:500 min04:4998 min13 Feb
London21:30 → 20:3705:270 min05:26113 min13 Feb
Durban23:30 → 22:3704:080 min04:0887 min13 Feb
Dubai01:30 → 00:3705:140 min05:13102 min13 Feb
Delhi03:00 → 02:0705:190 min05:19103 min13 Feb
Kolkata03:00 → 02:0704:290 min04:29101 min13 Feb
Singapore05:30 → 04:3705:410 min05:4195 min13 Feb
Sydney08:30 → 07:3705:020 min05:030 min14 Feb
Suva09:30 → 08:3704:280 min04:290 min14 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