TVClock

This is a simple app which shows a clock in the lower-right corner of the screen. The clock can be toggled by tapping it. It currently features no other customization options and the app icon serves only to start/stop the background service which keeps the clock running.

About custom date formats:
The following tokens can be used:
d - day
E - day of the week
M - month
y - year

'dd', 'MM', 'yy' use double digits for their values (e.g. 05 for 5)
'MMM', 'EEE' show shorthand names (e.g. Dec, Jan, Wed, Fri)
'MMMM', 'EEEE' show full names (e.g. December, January, Wednesday, Friday)
'yyyy' shows the year in 4 digits

You can mix these with symbols as well.
Using 5th December 2017, here are some examles:
dd-MM : 05-12
d,MMM,yy : 5,Dec,17
dd-MM-yyyy EEE: 05-12-2017 Tue
dd/MM EEEE: 05/12 Tuesday