A man is born in 1955

(I heard this in a movie and I think it’s pretty cool.)

A man is born in 1955. Today, the 14th of August, 2017, he is 18. How is this possible?

• "Today" is 1973? Aug 14 '17 at 11:52
• Perhaps 18 is his age listed in Base 54. :P Aug 14 '17 at 18:16
• @Fogmeister He has a horse named Wednesday Aug 14 '17 at 20:49
• @JimJones this riddle reminded me of it. Very similar nature. Aug 14 '17 at 20:50
• @Michael There are only 10 people in the world, those who know binary and those who don't. You, my friend, are the latter. Aug 15 '17 at 10:17

1955 is where he was born. So either hospital room number or home address if home birth!

I have heard this one before but I don't remember where, maybe the movie you mentioned.

• After answering I looked it up and its a pretty easy google find too! Aug 14 '17 at 11:58
• True maybe a good one to annoy ppl with on the fly! Aug 14 '17 at 12:07
• The puzzle might have worked better with '33 instead of '55 ;-) Aug 14 '17 at 16:35
• There similar puzzles involving twins, with one born in March and one born in e.g. September. en.wikipedia.org/wiki/March,_Cambridgeshire (The most complicated version being with them born either side of midnight on a month boundary, as the ambulance crosses the town boundary.)
– armb
Aug 14 '17 at 17:29
• Apperently, people are keeping a list of places like these: en.wikipedia.org/wiki/List_of_places_with_numeric_names Aug 15 '17 at 14:38

He was born on an extrasolar planet that revolves around its star in 3.4444444444444 Earth years.

• Good thought, sir. I like the way you think. Aug 15 '17 at 10:14

"Today, he is 18." Which means his name is 18. Or he is in jail, having number 18.

The man died in 1973 and thus only lived 18 years?

• But then would you say he's 18 today? (This question already has an accepted answer, btw.) Aug 14 '17 at 17:52
• the accepted answer is lame...i like this better Aug 15 '17 at 1:20
• You're right, the accepted answer is lame. Who needs that ruddy answer. Be creative! There's more than one answer. Aug 15 '17 at 10:16
• This is what I thought first xD Aug 16 '17 at 9:31

At the risk of giving the obvious answer(s),

• He’s been in suspended animation / stasis for 44 years.
or, almost equivalently,

• He’s been travelling in space for $n+44$ years at such (relativistic) high speed that only $n$ years have passed for him during his trip, so he’s aged only $n$ years.  (And he’s spent only $18-n$ years on Earth.)

• The second one is why I make fun of trying to handle absolutely every case in medical software. Aug 15 '17 at 3:20
• This is a very possible possibility. Aug 15 '17 at 10:15

The person was in space or another planet. People age differently in space/other planets.

This man acted in interstellar movie maybe.