Currently, the clock component of the panel provides for the hours %H hour (00..23) and a padded version %k hour ( 0..23) which doesn't display none useful zeros. But for the minutes, it only provides %M minute (00..59) My request would be to also have a padded version of the minutes (1..59) not displaying none useful zeros. Examples : 0 h 3 h 3 h 1 5 h 9 14 h 10 23 h 43 Thank you. Available label format at : http://docs.xfce.org/xfce/xfce4-panel/clock
If you look more closely to the page you linked, where is says "By default, numeric fields are padded with zeroes.", you'll discover that %k == %-H, so to accomplish what you need you should use %-M.