> I don't see this in my agenda view. Image attached. This is because there is a span in your case (Day). The space is still there but it's not an extra one.
The space in:
" " ;; <- this is the extra space
'(:eval (org-agenda-span-name org-agenda-current-span))
should be conditional to the expression below evaluating to something
different than the empty string.
Best regards,
Carlos
