Probably… 40 years old becomes North Korean leader Kim Jong Un today, although state media has continued its decades-old practice of making no mention of his birthday.

Kim’s birthday is believed to be January 8, although his regime has never confirmed the date. The US government lists Kim’s year of birth as 1984, which makes him 40 years old this year.

North Korea has not confirmed Kim’s date of birth, but his birthday is believed to be on January 8, Reuters reports.

The birth dates of his father and grandfather, who preceded Kim in leadership of the country, are National Celebrations in North Korea.

Kim Jong Un’s supposed date of birth passed quietly without mention in the country’s media or calendars.