Change Time widget to 24hr format, e.g '13.45'

[welovesummer]

So as above, how can I change the time from 01.45 to 13.45

I know I can add PM or AM but space is limited so I need to leave this part off

Any help would be appreciated!

[Frank1]

HH:mm = 13.45
hh:mm = 01.45

[welovesummer]

THANKYOU!!