That is because at noon it is 12 p.m. and for the minute and the hour hands overlap, the next time it would happen is at 1:05 which is going to overlap again
1:05, once 12:00 (noon) has changed to 1:00 (the short hand at 1 and the long hand at 12) the long hand will soon shift over to the 1 indicating its 1:05
