Schedule
Agenda
noun
The extent of the day is that we're going to do this, this and this. That is our schedule and agenda, so stick to it.
にってい
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
演奏会の日程は、次の日曜日に変更されました。
According to the concert schedule, it’s been changed to next Sunday.