If you apply to postpone graduation, then the defense can be postponed accordingly. Generally speaking, the defense time is within one month after the graduation thesis is submitted, but if you apply for an extension of graduation, the defense time will be postponed accordingly. The specific extension time needs to be determined according to the regulations of the school and the actual situation, and it is necessary to apply to the relevant departments of the school in advance and get approval. When the defense is postponed, the time and place should be rearranged to ensure the smooth completion of the defense and graduation.