Ruling · Vaiśākhī · 1920

Monday 12 April

Determinatein Bucharest, under the Rashtriya Panchang method. Clear of every threshold by 238 minutes.

Decide it for

44°26′ N 26°06′ E · Europe/Bucharest · GeoNames 683506

The two days

A tick is five ghaṭīs, two hours. The day is sunrise to the next sunrise.

Day of Monday 12 April

Taken. The transit falls in this day.

05:22 sunrisenext sunrise 05:20
Sun enters Meṣa 01:23:12
04:5808:5812:5816:5820:5800:5804:58

Falls in this day

Day of Tuesday 13 April

The transit does not fall in this day. Not taken.

05:20 sunrisenext sunrise 05:19
04:5608:5612:5616:5620:5600:5604:56

Does not fall in this day

The day, the window the rule readsThe instant the Sun enters Meṣa

How it was decided

  1. 01

    Aṅga

    The Sun enters Meṣa at 01:23 on Tue 13 Apr.

    1920-04-12T23:38:49Z · nirayana, lahiri-iae1985

  2. 02

    Kāla

    The day runs from sunrise to the next sunrise: from 05:22 on the 12th, and from 05:20 on the 13th.

    day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 12th, not the 13th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106

  4. 04

    Tie-break

    An instant falls in one day and no other. No tie-break is needed.

    day counted from sunrise → only-day · margin 14254 s

  5. 05

    Ruling

    Vaiśākhī, Bucharest, 1920: Monday 12 April.

    confidence: determinate

Say it like this

In Bucharest, Vaiśākhī 1920 falls on Monday 12 April. The Sun enters Meṣa at 01:23 on Tue 13 Apr, and the rule counts the day from sunrise. Counted from midnight, or by the Tamil rule for the first day of a solar month, which gives a transit after sunset to the next day, it is 13 April.

ahargana.org/bucharest/festivals/1920/vaishakhi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 12 Apr
Ahargaṇa, classicalDisc centre, no refractionMon 12 Apr
compat-drikpanchangComparison profileMon 12 Apr
Counted from midnightCRC 1955, p. 106Tue 13 Apr
Past sunset, the next day (the Tamil rule)CRC 1955, p. 244Tue 13 Apr
No institution has a recorded ruling for Bucharest.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/vaishakhi · ruleset 2026.3-draft

Sign entered
Meṣa
Zodiac
Nirayana
Ayanāṃśa
lahiri-iae1985
Day counted from
Sunrise
Tie-break
None: an instant
Reference
CRC 1955, p. 106

“Mesadi — Cadaka puja (Bengal), Bahag Bihu (Assam), Cheiraoba (Manipur), Visu (T. C. State), Vaisakhi (on the samkramana day commencing from sunrise).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106. “The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106. The other names in the row (Cadaka puja, Bahag Bihu, Cheiraoba, Visu) are regional observances and wait with the regional rows.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceSun enters MeṣaSunrise 12thCoveredSunrise 13thCoveredRuled
Los Angeles15:3905:26falls05:25no12 Apr
Chicago17:3905:16falls05:14no12 Apr
Jersey City19:3906:23falls06:21no12 Apr
Port of Spain19:3905:57falls05:57no12 Apr
London00:3906:13falls06:10no12 Apr
Durban01:3906:13falls06:14no12 Apr
Dubai03:3906:00falls05:59no12 Apr
Delhi05:0906:00falls05:59no12 Apr
Kolkata05:0905:20falls05:19no12 Apr
Singapore06:3906:02no06:01falls13 Apr
Sydney09:3906:15no06:16falls13 Apr
Suva11:3906:15no06:15falls13 Apr
Profile · tradition
pac-rp@2026.1 · smarta
Rule
vaishakhi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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