EDF observation plan of Euclid mission (Euclid Collaboration 2022a). The date is from the beginning of Euclid operation. The observational epochs at each EDF are shown with squares. The numbers above the squares show the number of visits within each epoch. For example, five visits for the entire 10 deg² of EDFF will be made at every epoch shown with squares. The visits within one epoch are made within 15 days. We assume that the images taken in the first 1.25 yr of the mission are used to construct the reference images and the SN search starts after 1.25 yr.