Present continuous for fixed future arrangements
Used with a time expression, the present continuous tense can express fixed social or travel arrangements for the future:
"What
are
you
doing
tonight?" "I'
m going
out with some friends."
(it is settled)
They
are getting
married next month.
(they have made arrangements)
I'
m flying
to Istanbul on the 15th.
(I have booked my ticket)
Related topics:
Future continuous for future arrangements