Suncalc
Solar calculator.Shows the trajectory of the movement of the sun and the phase of illumination during the day (and a couple of pleasant little things) on the map for the selected place and date.
World Time Buddy
Tracking time zones.For example, by the nature of the work, you need to contact clients or employees from around the world who are in different time zones.
Here you can get confused and call at an unsuccessful time.
and this timeline immediately shows whether the time for the call is convenient, the inconvenient time is highlighted in color, very graphically.
