@ASIMount@ZWO#58477 Sorry for my English. By solar time I mean the management of summer time. To activate the Meridian Flip, I understand that the real time and not the daylight saving time must be set in the mount. On the previous mount I simply deactivated this management on hand controller. Now with the combination ASIAIR PLUS and AM5 I was wondering if I should force real time on ASIAIR, to correctly manage the Meridian Flip, or I was wondering if ASIAIR automatically took into account the daylight saving time in Europe in the summer months.