I find it impressing that you can easily parse 20210226-00:01:25.

The time is of course no problem but even with "20210226" standalone, I stumble and misread 10 and 22 before noticing that this doesn't parse. If there are more zeros and more 1's or 2's, it gets even worse.

I hate it that the migrations in Rails are numbers only. "db/migrate/20210218125920_add_new_column.rb" is simply not human parseable.