Currently your API provides the following data for Azerbaijan Grand Prix 1st practise (ID 1332 in competition ID 8).

“timezone”:“utc”
“date”:“2021-06-04T09:30:00+00:00”

However, the official source has the same event in its calendar (the downloadable ICS file from https://www.formula1.com/en/racing/2021/Azerbaijan.html)

DTSTART;TZID=Europe/London:20210604T093000

So the timezone is Europe/London, not UTC (like in your data). Because UK oberves daylight savings time, Europe/London timezone is one hour off from UTC during the summer.

Please either change the timezone in your data, or fix event times.

I used Azerbaijan Grand Prix as an example, but the problem affects all events.