One of my Sites have 0 Users in the current Month, but yesterday it where 19

Hey there,
one of my small sites had 19 visitors yesterday. After a friend of me told me, that my piwik-instance calculated something wrong, I checked it up.

And yes, also one of my sites have in the current month 0 visits. But yesterday there where 19 visits.

Where can I start to analyse?

Regards,
Oli

I was/am having the same issue: 301 Moved Permanently

See this bug: Timezone bug? Visits being reported on the correct hour · Issue #4380 · matomo-org/matomo · GitHub