actually dudes i can most definitely solve your problem strong man
there are two ways that i know of that you can go either back to the past or go to the future
1) buy urself a Delorean and get good friends with a scientist named Doc, grab some plutonium, and make the flux capicitator (which we all know is how time travel is possible, im sure everyone on this board just didnt want to tell you that *sorry guys*). set the dials to where you want to go. slam on the gas til it hits 88 mph and your there. although it cant bring you to like Rome or anything, just time travels you to the past or future of the area your in

2) try to do a history report with your best bud, and also works if you have a strict dad that wants to make you go to boot camp if you fail the history class. it works too if you and your buddy are trying to start your band. Go by a Circle K store and work on your history report, and a 1950s style phone booth should appear out of nowhere with a man named Rufus inside. the phone booth will allow you to travel forward and backwards in time for your history report, but the clock is always running in this current time. for example, you go in the past for 2 hours and it is 2pm here when you leave, when you return to the present it will be 4 pm here. also, bring some gum along incase the attena on top gets broken.

....or you could just put a time capsule in the ground and remember to dig it up within a couple years (but thats the n00b way)