Comment 2 for bug 74670

Because it would be consistent with itself. In a monospace terminal, the width of a space is equal to the width of a digit, so dates line up in, e.g. "ls". This isn't the case with variable-width fonts and it just looks silly to have inconsistent spacing between, e.g. "Fri··9·Feb,·17:42" and "Sat·10·Feb,·17:42".