The twins's birthdays

My brother, McKay and his wife Sophie, are in the middle of adopting their niece and nephew.  They went from 3 kids to 5 and now they have two sets of twins.  The kids are aged 11, 11, 9, 9 and 6.  Here's the best part.  The twins birthdays are 2 years and 2 days apart.  That makes a very intense birthday weekend... 4 of your 5 kids birthdays within two days.  We got to go up because it was Labor Day weekend and we didn't have soccer... it was fun to wish them all a happy birthday.  We got them a combined present.  A giant jenga set.  I think they're really fun, but I hope they think so too.