Clock.Format Date error pattern

[ivan_fd (Іван Федірчик)]

Hi.
Clock.Format Date - I need to print a day number of week.
On phone with android 5.1, xiaomi redmi 3 - there is an error:

Illegal argument for pattern in Clock.FormatDateTime. Acceptable values are empty string, MM/dd/YYYY hh:mm:ss a, MMM d, yyyy HH:mm For all possible patterns, see SimpleDateFormat (Java Platform SE 7 )
Note: You will not see another error reported for 5 seconds.

[ImranTariq]

for showing time you have to use HH:mm in pattern instead of U

[ImranTariq]

and if you want to get day of week try these,

[ivan_fd (Іван Федірчик)]

It works, thank you.
For some reason I didn’t guess to look at Clock methods.
Pattern with “u” works on phone with android 7.