Comment by bArray

My format used to be as follows:

    * [ ] YYYY-MM-DD
      * [ ] 1800: Dinner with parents
      * [x] Walk the dog
    * [ ] YYYY-MM-DD
      * [ ] 0900: Interview new recruit
        * [ ] Prepare interview questions
        * [ ] Upload result to HR system

This worked really well for me and was easily searchable. One benefit would be that it is easily trackable in Git.

These days I have a little A6 lined notebook and manually list tasks there. Each page is a new day and the tasks are listed similarly. The only modification is that sometimes I put some letters to theme a task, i.e.:

    * [ ] YYYY-MM-DD
      * [x] Home: Walk the dog