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isDaylight
[ID,SRS] = isDaylight(dt, Lat, Long, [illumDef]);
Returns true if input time is during daylight for the input location.
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Parameters |
Description |
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dt [datetime] |
Date of observation. Can be a Matlab datetime object of a date vector. If not a datetime object, GMT is assumed. |
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Lat [array] |
Latitude position, valid between -75 to 75 (deg) |
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Long [array] |
Longitude position (deg) - uses military convention which has east longitudes as > 0 and west longitudes as < 0. |
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illumDef [string] |
(Optional) Definition of solar illumination other than the standard definition (90 deg 50 min). Choose between 'Civil' - 96 deg (twilight), 'Nautical' - 102 deg, or 'Astro' - 108 deg. |
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Return Values |
Description |
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ID [bool] |
true if input time is during daylight hours |
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SRS [struct] |
Contains the sun vector information (see SunRiseSet) |
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Description