When it's one of these:
formatting link
0.61 degrees out. We've learned from a previous thread there's such a thing as a "Chinese ton" so perhaps there's a "Chinese degree" as well. In fact if *everything, everywhere* were made in Chinese units, we'd all be fine. No buildings would fall over; no trains would crash, no engines would seize. And everything would be a lot cheaper. They're simply years ahead of us.