Ruling · Vaiśākhī (Baisakhi) · 2091

Saturday 14 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 117 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two days

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

Day of Saturday 14 April

Taken. The transit falls in this day.

05:44 sunrisenext sunrise 05:43
Sun enters Meṣa 03:46:06
05:2009:2013:2017:2021:2001:2005:20

Falls in this day

Day of Sunday 15 April

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

05:43 sunrisenext sunrise 05:41
05:1909:1913:1917:1921:1901:1905:19

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 03:46 on Sun 15 Apr.

    2091-04-14T19:46:07Z · nirayana, lahiri-iae1985

  2. 02

    Kāla

    The day runs from sunrise to the next sunrise: from 05:44 on the 14th, and from 05:43 on the 15th.

    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 14th, not the 15th.

    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 6992 s

  5. 05

    Ruling

    Vaiśākhī, Baoding, 2091: Saturday 14 April.

    confidence: determinate

Say it like this

In Baoding, Vaiśākhī (Baisakhi) 2091 falls on Saturday 14 April. The Sun enters Meṣa at 03:46 on Sun 15 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 15 April.

ahargana.org/baoding/festivals/2091/vaishakhi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 14 Apr
Ahargaṇa, classicalDisc centre, no refractionSat 14 Apr
compat-drikpanchangComparison profileSat 14 Apr
Counted from midnightCRC 1955, p. 106Sun 15 Apr
Past sunset, the next day (the Tamil rule)CRC 1955, p. 244Sun 15 Apr
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/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 14thCoveredSunrise 15thCoveredRuled
Los Angeles12:4606:23falls06:22no14 Apr
Chicago14:4606:12falls06:10no14 Apr
Jersey City15:4606:19falls06:18no14 Apr
Port of Spain15:4605:56falls05:56no14 Apr
London20:4606:07falls06:05no14 Apr
Durban21:4606:15falls06:15no14 Apr
Dubai23:4605:58falls05:57no14 Apr
Delhi01:1605:57falls05:56no14 Apr
Kolkata01:1605:18falls05:17no14 Apr
Singapore03:4607:01falls07:01no14 Apr
Sydney05:4606:17falls06:18no14 Apr
Suva07:4606:16no06:16falls15 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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