I usually use spacemacs in maximized window, thus the date and time presents in mode line is a must.

I understand that spacemacs uses powerline mode to mimic vim, the manuals of both spacemacs and powerline does not tell how to add new section to display additional info (in this case it is date and time). I have attempted to comprehend the nyan cat code in color layer, but my elisp skill did not satisfy.

Any help is appreciated.