Hi, the nunber of days in a goodybag depends on how many days is in the month that you purchase the goodybag,
February has 28 days, so you receive 28 days including the day you purchased it in
(it shows 27 days remaining, but that doesn't include today)
If you buy a goodybag next month you'll receive 31 days
And 30 days if you buy a goodybag in April
Any goodybag purchased in February will have 28 days validity.
Your March goodybag will last for 31 days, your April one 30 days
goodybags have always had a calendar month's validity.