The moving day-night-zone display only the terminator-line at sunset and sunrise.
The day-night-zone is only calculated for one day and repeated.
By click in a day in past or future the day-night-zone will re-calculate for this day and repeated.
The time slider time is in hh:mm and is reset at zoom 01.
If your system time is changed during the visit of this website, the display of the times is no longer correct.
Please reload the web page after changing your system time.
The start time is set by the server.
The running time is calculated on your computer.