Japan embassy Reject my visit application

Hi every one i have a question Last year dec 2013 i apply for a tourist visa of Japan they reject me there is a stamp on the last page of my passport.the date written there 25-12-17------------ what did it mean i visit there before for one month and i spend 26 days then i come back----- i can not understand now i want to apply again i am able to apply or not bcoz i heard if u r rejected u cn apply after six months again but i am confused what did it mean of the stamp 25-12-17 --- mean i can not apply till 2017..please help

My guess is that the "25" is probably the year using the Japanese year numbering system - Heisei 25. Currently, it is Heisei 26. So, that stamp may be 17 December, 2013.