If you ask Google for a CET time then it gives the wrong answer (cest time) as the most prominent response.
Only in fine print it shows that the CET is one hour behind CEST.
It can (and has) lead to missed meetings if parties decide on cet time and only one of them asks Google.
19:45
Thursday, 7 July 2022
Central European Time (CET)
19:45 Brussels, Belgium (CEST)
19:45 Madrid (CEST)
19:45 Paris (CEST)
19:45 Rome (CEST)
19:45 Berlin (CEST)
19:45 Budapest (CEST)
18:45 Algiers [El Djazaïr] (CET)
18:45 Tunisia (CET)