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Everyday
Sunrise, sunset, golden hour and blue hour for any place, with the direction the sun sets in.
The times come from the sun's position at the coordinates you choose, not from a fixed table, so they work for any date and for years ahead.
The calculation assumes an open, flat horizon. A mountain, a hill or a block of flats can hide the sun several minutes earlier.
It uses the NOAA Solar Calculator series: solar declination and the equation of time, with a second pass at the computed moment so sunrise and sunset do not drift by minutes.
Sunrise and sunset are defined at an altitude of −0.833°, which includes atmospheric refraction and the sun's radius. The golden hour is the window where the sun sits between −4° and +6°, and the blue hour between −6° and −4°.
Every instant is computed in UTC and shown in Greek time, so daylight saving is applied at display time and never enters the maths.
A different reference point, elevation and rounding. The gap is usually one or two minutes; for an official figure use the National Observatory or the Hellenic Meteorological Service.
No. The same instant is described by a different clock. The calculation runs in UTC and is shown in Greek time with the daylight saving in force on that date.
The golden hour is the low-sun window shortly before sunrise and around sunset, with warm light. The blue hour is the few minutes just after it, with even, cool light.
Yes, at the coordinates of the place you choose. The difference between Athens and Corfu is about ten minutes.
Sunset
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