Virtual sundials
(at certain location and time)
A sundial image based on the specified location, date and time will be displayed below. Please enter the latitude, longitude, date, time and time zone, which is the time difference from UTC, then click/tap the Run button.
Please note that the sundial doesn't indicate time at night!
A sundial is displayed below.
This sundial displays time scale that corresponds to latitude and longitude. However seasonal error, namely equation of time (EOT), remains. The error is maximum 16 minutes. Accurate time can be obtained by subtracting the EOT from the time indicated by the shadow. Please see here for more details.