Time travels are a great way to speed up progress and reach your goals instantly. Time Travels move time forward for most things in the game but there are a couple things that are not fast-forwarded by Time Travels.

When a Time Travel is used the player recieves all of the resources that they would normally earn for that amount of time passing. Any production that was underway when the time travel is used, is advanced the amount of the time travel. For Factory production this could finish production of the item.