TYP: mostly datetimelike
- [ ] closes #xxxx
- [ ] tests added / passed
- [ ] passes `black pandas`
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

looks good, is this compat with what we merged in : https://github.com/pandas-dev/pandas/pull/36742

maybe rebase just to be sure (and merge on green). Thanks @jbrockmendel 