https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=30540 Martin Renvoize <martin.renvoize@ptfs-europe.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |Needs Signoff --- Comment #2 from Martin Renvoize <martin.renvoize@ptfs-europe.com> --- 2017-03-26 01:35:00 is such a date in Europe/London time.. it's a DST boundary day so anything between 12.59.59 and 02.00.00 doesn't exist ;) Set any checkout date in the database to this and set your tz config to Europe/London and you'll find the issuehistory page will crash without the patch here. Unit test to follow.. once my brain has worked out how to write one. -- You are receiving this mail because: You are watching all bug changes.