Yesterday was the feast of Christ the King in the Extraordinary Form, but in the Ordinary Form we have to wait for another month to celebrate the same feast.
On The New Liturgical Movement blog and on Rorate Caeli Peter Kwasniewski has posted an interesting and carefully considered piece about the significance of moving this feast, itself instituted in 1925, in the 1970 Missal to the Sunday preceding Advent.
His argument is that this is not just a matter of tidying up the Church year but that it fundamentally alters the significance of the feast, moving its essence from the temporal to the eschatological. He makes an impressive argument, and one that, as he points out, is topical in the life of the Church. His linked articles can be accessed at Why is the Feast of Christ the King Celebrated on Different Sundays in the OF & EF Calendars?