from datetime import date
start_date = date(2019, 5, 30)

today = date.today()
print("Today's date:", today)

delta = (today - start_date).days + 1
print("Days since 30.5.2019 (including today): ", delta)
packet_size = 14
print("Meaning when today finishes it should be in the packet:")
print("Empty places: ", delta % packet_size)
print("Pills left: ", packet_size - (delta % packet_size))