What do we call the first of September in the FSU?
There are at least three titles:
1 сентября – yes, that is the date, but “1 September” is also used to name the first day of school because that is the traditional day when school is back in session.
Днём знаний – naturally, it is the “day of Knowledge,” another name used for the first day of the school year.
первым Днём Осени – and, it is the first day of autumn.
When children arrive for school, a special ceremony, usually outdoors, greets the first day of school. The children are dressed up and carry flowers for their teachers. This called the “first bell.”