const (
		minOffset   = -12 * time.Hour  // E.g., Baker island at -12:00
		maxOffset   = +14 * time.Hour  // E.g., Line island at +14:00
		offsetAlias = 15 * time.Minute // E.g., Nepal at +5:45
	)
	offset = offset.Round(offsetAlias)
	if offset < minOffset || maxOffset < offset {
		offset = 0
	}
	return time.FixedZone("", int(offset/time.Second))
}

pkg syscall (freebsd-arm64), const SYS_POSIX_FALLOCATE ideal-int
pkg syscall (freebsd-arm64), const SYS_POSIX_OPENPT = 504
pkg syscall (freebsd-arm64), const SYS_POSIX_OPENPT ideal-int
pkg syscall (freebsd-arm64), const SYS_PPOLL = 545
pkg syscall (freebsd-arm64), const SYS_PPOLL ideal-int
pkg syscall (freebsd-arm64), const SYS_PREAD = 475
pkg syscall (freebsd-arm64), const SYS_PREAD ideal-int
pkg syscall (freebsd-arm64), const SYS_PREADV = 289