According to great scientists such as Albert Einstein, time is not as stable as most of us think. As humans we’re adjusted to time and our evolution has established tricks to allow our conscious minds to deal with it but in reality it’s a slippery concept. 

[…]Time slips occur when a current time (now) interlaces with a previous time (then) and can be experienced by the person from the more recent time. However, the event is usually unnoticed by the people from the earlier time. What is the evidence for this phenomenon?

Well, plenty if you know where to look. In fact it’s so common that we’ve even built it into the English language. We’ll explain. When a time slip occurs people in both realities are able to experience the alternative reality.[…]

Car Photographed 100 Years Before Produced & Other Cases of ‘Time Slip’! — Humans are Free