A historical moment can last up to an hour and a half.

If it is longer it is a date.

A historical period concerns quite a lot of people.

An era concerns almost everyone.

The difference between an event and a moment is that it strikes you and that it has consequences. 

The historical event was most common during the nineteenth century.

© Linn Hansén, Gå till historien (Norstedts 2013), translated by Linn Hansén