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DateAlmanac

What year was I born if I'm 1?

2024 or 2025

Anyone who is 1 today, Friday, November 13, 2026, was born between Thursday, November 14, 2024 and Thursday, November 13, 2025. The boundary falls in the middle of the year, so the answer spans two of them.
Earliest birth date
November 14, 2024
Latest birth date
November 13, 2025
Birth years
2024 or 2025
Age today
1

Which year, exactly

Someone born on Thursday, November 13, 2025 turns 1 today. Someone born a day later, on Friday, November 14, 2025, is still 0 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 1 today, a date of birth has to fall on or after Thursday, November 14, 2024 and on or before Thursday, November 13, 2025.

There is no 29 February in that window, so everyone who is 1 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

Other ages