According to the query of academic reference network, the graduation time of the thesis has not been postponed, which depends on the academic level and school regulations, as follows:

1, undergraduate stage. The longest extension time is 6 years, but in general, unless the quality of the paper is very poor, it can be passed. The common extension time is 3 months to half a year, and some schools stipulate 1 year. The specific time should be decided by the school according to the students' own situation or the certificate issued by the professor.

2. Master's degree. The normal academic system is 2 years, which can be extended to 5 years at the longest. The specific extension time usually depends on the regulations of each school.

3. Doctoral postgraduate stage. The normal academic system is 3 years, and the longest can be extended to 8 years. Similarly, the specific extension time also needs to be determined according to the school regulations. In addition, there are some special circumstances, for example, graduate students can apply for another year's extension of graduation, but this may lead to difficulties in writing files when they graduate, so it is recommended to complete their studies as much as possible within the specified time. Generally speaking, the time limit for delaying graduation is set by each school, and the specific situation needs to consult the academic affairs department or tutor of the school.