What year was I born if I'm 55?
1970 or 1971
Anyone who is 55 today, Thursday, September 24, 2026, was born between Friday, September 25, 1970 and Friday, September 24, 1971. The boundary falls in the middle of the year, so the answer spans two of them.
- Earliest birth date
- September 25, 1970
- Latest birth date
- September 24, 1971
- Birth years
- 1970 or 1971
- Age today
- 55
Which year, exactly
Someone born on Friday, September 24, 1971 turns 55 today. Someone born a day later, on Saturday, September 25, 1971, is still 54 until tomorrow. That is why “what year” has two answers rather than one, and why a birth date rather than a year is what settles it.
Read the other way round: to be exactly 55 today, a date of birth has to fall on or after Friday, September 25, 1970 and on or before Friday, September 24, 1971.
There is no 29 February in that window, so everyone who is 55 today has had a birthday every year since they were born. Twenty-five of the hundred ages on this site do span a leap day; this is not one of them.
The two candidate years
- Born in 1970from September 25, 1970
- Born in 1971up to September 24, 1971