Hello Ntozier,here are my versions:osTicket: v1.10 (901e5ea)Server-Software: ApacheMySQL-Version: 10.1.26PHP-Version: 5.6.30-0+deb8u1PHP-Extension: all except APCudate.timezone: Europa/Viennainstalled language Packs: de — include/i18n/de.phar Version: 148432, for version v1.10en_US — include/i18n/en_USURL where you can test the problem is: http://ticket.kaernten-bus.at/open.phpThe field "Wann" with the datepicker makes the problem.Thanks in advanceRené Glanzer