gour
commented
3 years ago Let me know in the comments if you have any more useful examples!
Usually, there is need to calculate (for holidays), day before or after the Easter.
Something from the Etm manual:
Text entry supports the full flexibility of the superb Python
dateutil package. Consider, for example, creating a reminder
for Presidential election day which repeats every 4 years on
the first Tuesday after a Monday in November (a monthday
falling between 2 and 8).
Let me know in the comments if you have any more useful examples!