OpenBSD Adds Mars Time Support

Description

The screenshot shows a browser page at "https://marc.info/?l=openbsd-cvs&m=161730046519995&w=2" with a monospace OpenBSD CVS diff listing modified areas such as "sbin/slaacd", "sbin/unwind", "sys/kern", "sys/msdosfs", "sys/netinet6", "sys/nfs", "sys/ntfs", "sys/sys", "sys/ufs/ext2fs", and "sys/ufs/ufs", with files including "kern_time.c", "syscalls.master", "time.h", and "ufs_vnops.c". The visible log message says the diff introduces "Coordinated Mars Time (MTC), the Mars equivalent of earths Universal Time (UTC)", explains that Mars has a 24 h 39 m 35.244 s day, and says OpenBSD can work with Martian time zones using "TZ=MCT" while "TZ=Mars/Perseverance" aliases are not yet defined. It also says to "Bump the major on every single base library", warns "DANGER: ABI incompatibility", notes that updating requires extra work or users will not be able to login, and warns SSH cannot currently login between MCT and Earth time zones. The joke, amplified by the April 1, 2021 source date, is that a deadpan operating-system commit treats Mars time support as a serious kernel, libc, TLS, SSH, and ABI-breaking platform requirement.