<P> The oldest part of the Orloj , the mechanical clock and astronomical dial , dates back to 1410 when it was made by clockmaker Mikuláš of Kadaň and Jan Šindel , then later a professor of mathematics and astronomy at Charles University . The first recorded mention of the clock was on 9 October 1410 . Later , presumably around 1490 , the calendar dial was added and the clock facade was decorated with gothic sculptures . </P>
<P> The oldest part of the Orloj , the mechanical clock and astronomical dial , dates back to 1410 when it was made by clockmaker Mikuláš of Kadaň and Jan Šindel , then later a professor of mathematics and astronomy at Charles University . The first recorded mention of the clock was on 9 October 1410 . Later , presumably around 1490 , the calendar dial was added and the clock facade was decorated with gothic sculptures . </P>
when was the astronomical clock in prague built
when was the astronomical clock in prague built
1410
1410