The School Year at Hogwarts

The year begins on September 1
Hogwarts Express brings students to the Hogsmeade Station where the 2nd through 7th years ride horseless carriages up to the castle and 1st years cross the lake in boats with Hagrid
the start-of-year feast
the sorting
a few words from Dumbledore
vast quantities of food and drink
a few more words from Dumbledore
classes begin on September 2 - schedules handed out at breakfast
Quidditch trials during the second week, also flying lessons for first years
Halloween Feast on the evening of October 31
first Quidditch match in the beginning of November
second week of December McGonangall takes names of those who are staying over the Christmas holidays
end of first term is usually about a week before Christmas and most of the students and some of the teachers go home
December 25: Christmas Feast
shortly after January 1: Hogwarts Express returns and start of second term
Easter holidays - students go home, exact dates vary every year exams are held the first week of June
end-of-term feast
results come out the second week of June
the Hogwarts Express returns to London during the third week of June
all staff and students leave Hogwarts during the summer except for Filch

Daily Routines at Hogwarts
The day begins with breakfast in the Great Hall. During breakfast, the morning mail arrives in a flurry of hundreds of owls. A bell signals the start of the first class at 9 am.
At the end of this class, there is a short break to walk to the next class after which another bell signals the beginning of thenext class.
There are two or one morning classes with a break between, followed by lunch and a break. After lunch, classes resume at 1 pm. It is not clear if there are one or two classes in the afternoon.
Supper is served in the Great Hall toward evening, after which the students are expected to be in their House common rooms for studying and socializing. There is no set bedtime after supper.