The sunrise function determines the UTC (Coordinated Universal Time) when the sun just rises above the horizon, \gamma = -0,833\degree. The default geographical settings are set in the file “LT_location.mat”. Change the settings to your preferred location and set the file to read-only in order to prevent your settings from being overwritten with the default values in future versions.
[utc,lct] = sunrise(day,coord)
|Returns the UTC time in |
|Returns the local time, offset to UTC is defined in |
|Specifies the date in ‘DD.MM.YYYY’ format.|
|Specifies the geographic coordinates, default is defined in |
Determine UTC for sunrise at 13.05.2020 in Berlin:
utc = sunrise('13.05.2020')
utc = 03:14:01
Determine UTC and local time for sunrise at 21.07.2025 in Berlin:
[utc,lct] = sunrise('13.05.2020')
utc = 03:14:01 lct = 05:14:01
Determine UTC for sunrise at 21.04.1988 in Athens:
utc = sunrise('21.04.1988',[37.978 23.728])
utc = 03:01:36
Daylight in buildings. 2019.