At the bottom right it says: "All times are UTC + 1 hour (DST)". This ended last weekend in most countries in Europe.
Now, for the registered user / logged in view each user has to change the time display in his Personal Preferences ("Board Preferences" -> just move the mark to "No DST"). For the general view (not logged in readers, visitors) this has to be done by an admin in the ACP.
As readers may come from any point of the globe I'd suggest to set this general time display
- either to French local time (meaning an admin should change to "No DST" to display the correct French time) or
- set the general display to GMT.