Solar time unit classes

Time unit constructors for the solar time system where the boundary of each day is at sunrise, sunset, or noon. This calendar is intended to be built on by other calendars to add common time components.

Usage

cal_time_solar_sunset

cal_time_solar_sunrise

cal_time_solar_noon

cal_time_solar_midnight

cal_time_solar_dawn

cal_time_solar_dusk

Format

A location-based calendar containing solar time units.

An object of class mt_calendar of length 1.

An object of class mt_calendar of length 1.

An object of class mt_calendar of length 1.

An object of class mt_calendar of length 1.

An object of class mt_calendar of length 1.

Details

The following time units are available in the solar calendar systems.

• day(): Day unit

See also

cal_time_civil_midnight

Examples

# Find the time of sunset in the Gregorian calendar
t <- linear_time(Sys.Date(), cal_time_solar_sunset$day(1L, lat = -37.8136, lon = 144.9631))
datetime(t, tz = "Australia/Melbourne")
#> <mixtime[1]>
#> [1] 2026-04-07 18:04:49 AEST