class Suntime::Suntime

• Suntime::Suntime
• Reference
• Object

Defined in:

suntime.cr

Constructors

• .new(lat : Float64, lng : Float64, t : Time | Nil = nil)

Instance Method Summary

• #calculate_time(what_time : Symbol)

  longitude and hour angle are in degrees equation of time is in minutes

• #decl

  and the solar declination angle (in radians).

• #degrees_to_radians(deg)
• #eqtime

  From γ, we can estimate the equation of time (in minutes) and the solar declination angle (in radians).

• #fractional_year

  First, the fractional year (γ) is calculated, in radians

• #radians_to_degrees(rad)
• #solar_noon
• #solve_for_zenith_ha(sunrise_or_sunset : Symbol)

  For the special case of sunrise or sunset, the zenith is set to 90.833 (the approximate correction for atmospheric refraction at sunrise and sunset, and the size of the solar disk) and the hour angle becomes: returns HA in radians

• #sunrise
• #sunset

Constructor Detail

Instance Method Detail