I started my 1st patch on a sunday and realised its expired. So the next day (monday) i bought a new pack and replaced the expired one. The following sunday I used the second patch.
Question is: was i supposed to stick the 2nd one on a Monday instead?? since the 1st one was on a sunday and it was expired.. or it doesnt matter?

Taken into consideration that the second one was used on a sunday and I intend to use the 3rd one on a sunday as well...

thank you