Support date-only field formatting

This needs a bit of heuristics as real-world pass files don't always follow
the specification for this.
2 jobs for master in 2 minutes and 30 seconds (queued for 78 minutes and 12 seconds)
Status Name Job ID Coverage
  Build
passed build_clazy_clang_tidy #114595

00:01:24

passed linux kf5-qt5 qt5.15 #114594

00:01:05

73.0%