We have noticed that the EPG remains one hour off in XBMC/Kodi after a DST change (it was last sunday). Times were OK when viewed in the TVHeadend web GUI though. Rebooting XBMC or simplyu restarting the plugin appears to fix it. Here is the thread in the OSMC forums:
https://discourse.osmc.tv/t/epg-and-dst-change/87379/7