Leavetaking of the Transfiguration:  the days following a feast feature the same Troparion and Kontakion and remind us of the feastday that just past.  Eight days after there is the final commemoration, the ‘leavetaking’, which  today marks the Transfiguration.

http://oca.org/saints/lives/2015/08/13/102284-leavetaking-of-the-transfiguration-of-our-lord

http://images.oca.org/icons/sm/greatfeasts/0806.Transfiguration.jpg