Regarding time shenanigans, this pic is supposedly their birthdays (up) and how old they say they are (down)

According to each, from left to right, the current date for them should be: 2014, 2019. 2017, 2022
give or take a year to accoutn for uncalculated months

What do you guys think this implies? Is Milgram a simulation? Purgatory?