--ini-enunciat
>>> import concerts

>>> concerts.interval(2024, 5)
datetime.timedelta(days=91, seconds=21600)
>>> concerts.interval(2023, 8)
datetime.timedelta(days=52)

--fi-enunciat

>>> concerts.interval(2023, 3)
datetime.timedelta(days=182)
>>> concerts.interval(2023, 5)
datetime.timedelta(days=91)
>>> concerts.interval(2027, 6)
datetime.timedelta(days=72, seconds=69120)
>>> concerts.interval(2030, 12)
datetime.timedelta(days=33, seconds=7854, microseconds=545455)