Calculate the appropriate solar.time column for input to metab(). The input
must be POSIXct clock time and should have the correct timezone information
embedded in the object, whether the tz is UTC, local time with daylight
savings, or local standard time. The output is always mean solar time (not
apparent; see convert_UTC_to_solaritme).
Arguments
- local.time
POSIXct date+time of interest, already in local time as specified by the tz attribute
- longitude
numeric, in degrees, either positive and unitted ("degE" or "degW") or with sign indicating direction (positive = East)
Examples
local.time <- as.POSIXct('2016-05-27 12:00:00', tz='America/New_York')
solar.time <- calc_solar_time(local.time, longitude=-74)