Thanks for the pointers to these formats. I created calendar.txt format to meet some requirements: - One line, one day - easy to use with Linux command line t

Thanks for the pointers to these formats. I created calendar.txt format to meet some requirements: - One line, one day - easy to use with Linux command line tools I use every day (grep, sort...) - Simplicity: no recurrence, no date time ranges (but I can of course grep for project tag "+pw" to see the first and last date for the project) - Fast to write, even on mobile - Use ISO 8601 standard dates, have standard weeks near dates