Hey folks, I am slightly puzzled that there has been no reaction at all to this patch. To me it seems entirely unambiguous, and it fixes a bug (as per the docstring of org-agenda-{later,earlier}).
Is there anything I can do to help include this half-line patch in org? I am sorry that I do not use the git version of org, but I checked that the state of affairs has not changed. Thanks and regards, Ingo