When writing it inline, I like this approach. I like even better when these things have names. Something like `std.time.s_per_day` or `time_utils.s_per_day`. Th

When writing it inline, I like this approach. I like even better when these things have names. Something like `std.time.s_per_day` or `time_utils.s_per_day`. Then in the one place they're defined, use a pattern like the above to make them easy to reason about.