Why is the EOM falling the 23rd-25th? A majority of players will be with family for the Holiday's, not online gaming. And it isnt even the end of the Month! End of the month would be the 29th-31st??? If you are going to keep making the EOM (End of Month) Tier active well before the end of the month, you might consider changing the name of it! For example: Christmas Tier or Holiday Tier.
On another Note: From a Marketing stand point it would be smarter to extend or wait on this until the 26th since most people will get money/giftcards for Christmas (the 25th), and will be able to do the tiered events more easily on the 26th. Also, your Auto-Recharge AP customers do not get their AP until the 25th, so if they do not log in time they will miss out.
Unless your doing this purposefully so that people miss out on the promotions, then you should redo this calender...