http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=1&chap=5#doc_chap1_sect1 here you should suggest to set the clock according to the UTC time, not localtime, as the given time is interpreted to be UTC. Reproducible: Always
Thanks for your report but please read the link you've given: "If the date/time displayed is wrong, update it using the date MMDDhhmmYYYY syntax (Month, Day, hour, minute and Year). At this stage, you should use UTC time. " We do suggest UTC already.