Any year in which Dec 1st falls to a Friday, roughly every 7 years.
Any year in which Dec 1st falls to a Friday, roughly every 7 yea
所有跟帖:
• 請注意,是星期六, 而不是星期五! -Chris20119- ♂ (0 bytes) () 12/07/2012 postreply 13:40:31
Any year in which Dec 1st falls to a Friday, roughly every 7 years.
• 請注意,是星期六, 而不是星期五! -Chris20119- ♂ (0 bytes) () 12/07/2012 postreply 13:40:31