I attended and logged an Event at 08/14/2021, but in the "My Finds Pocket Query" it is listed with 08/15/2021.
Maybe this is a Problem for all Event logs.
<wpt lat="51.742483" lon="8.713283">
<time>2021-08-14T17:00:00</time>
<name>GC9E2NP</name>
...
<Groundspeak:log id="1042227605">
<Groundspeak:date>2021-08-15T00:00:00Z</Groundspeak:date>
<Groundspeak:type>Attended</Groundspeak:type>