Aren't prepositions hard. As an English speaker, "during" would be appropriate but, as the old hymn goes: "dwellers all in space and time" so, since we now have a concept of spacetime "in" should also appropriate in any modern language. By modern, I mean anything in use after the General Theory of Relativity was postulated. ;-)

English has used "in" for "within" a period of time for a long time and again that seems fairly logical.

Laŭ mi ĝi taŭgas.

Yes.