Date of expiring cert

Hi I got a problem with grafana, that i can’t show date of expired cert, only days left. When I try to change units in column styles to Date & time shows up to me 01.01.1970. Is this possible to show exactly date of expiring certificate? Or this is a bug?

  • Grafana version: Grafana v7.3.4 (14c4940)
  • Data source type & version: prometheus, version 2.23.0
  • OS Grafana is installed on: Windows server
  • User OS & Browser: Windows, Opera

Someone fixed this issue?