4 ms·
Various sources for day-length estimates are available, see for example https://design-of-time.com/slowing.htm https://design-of-time.com/slowing.htm (appendix
by emilyfm 9y ago
Various sources for day-length estimates are available, see for example https://design-of-time.com/slowing.htm https://design-of-time.com/slowing.htm (appendix A).