I'm pretty sure everyone knows this app. For those new Nokia users like me who want to display the time anywhere, here is the link.
http://www.e71fanatics.com/2009/04/what-time-is-it-get-clock-anywhere-just.html
You can explore its settings to change font, placement of clock, brightness(opacity), and which application you want it hidden (in that case you can select the Home Screen, because it displays the time).😊