myClim assumes that the data are in UTC. To calculate temporal offset based on local solar time, this function requires
geographic coordinates (at least longitude) to be provided in locality metadata slot lon_wgs84
(in decimal degrees).
Geographic coordinates for each locality can be provided already during data reading, see mc_read_data()
, or added
later with mc_prep_meta_locality()
function.
TZ offset (in minutes) is calculated as longitude / 180 * 12 * 60
.