timetable clash

Translations
конфликт расписания
There was a timetable clash, so he had to reschedule the meeting.
Произошел конфликт расписания, поэтому ему пришлось перенести встречу.
Definitions
A timetable clash refers to a situation where two or more scheduled events or activities overlap in time, making it impossible for an individual to attend all of them simultaneously.
Words
timetable

noun
расписание
clash

noun
конфликт