cargo install --path .
$ weekahead
...will output a markdown file dated for Monday.
$ cat Week\ 19\ Oct\ 2020.md
# Week 19 Oct 2020
## 19 Oct 2020 (Mon)
#Journal/OnThisDay/10/19# #Journal/2020/10#
---
## 20 Oct 2020 (Tue)
#Journal/OnThisDay/10/20# #Journal/2020/10#
---
...and so on until Sunday.