What year was I born if I'm 15?
2010 or 2011
Anyone who is 15 today, Thursday, September 24, 2026, was born between Saturday, September 25, 2010 and Saturday, September 24, 2011. The boundary falls in the middle of the year, so the answer spans two of them.
- Earliest birth date
- September 25, 2010
- Latest birth date
- September 24, 2011
- Birth years
- 2010 or 2011
- Age today
- 15
Which year, exactly
Someone born on Saturday, September 24, 2011 turns 15 today. Someone born a day later, on Sunday, September 25, 2011, is still 14 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 15 today, a date of birth has to fall on or after Saturday, September 25, 2010 and on or before Saturday, September 24, 2011.
There is no 29 February in that window, so everyone who is 15 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 2010from September 25, 2010
- Born in 2011up to September 24, 2011