You can set the date on the left and the time on the right:
to change the year, click on the little arrows on each side of the year;
to change the month, click on the little arrows on each side of the month;
this updates the month view where you can click on the current day in order to highlight it;
it is recommended to check that the time zone settings are correct for your physical location. Click on the
button and select the correct place in the tree view;to change the time, you can then either move the hour, minute and second hands of the analog clock or change the numbers below.