Thanks to his healing factor, it's always been difficult for fans to determine how old Wolverine is. This element of the character's story has given plenty of creators an easy excuse to plant Logan into different eras of 20th and 21st-century history, allowing the character to appear in all sorts of stories over the years. This factor is on display throughout Predator vs. Wolverine, which quietly takes place across different time periods.
Source：https://www.cbr.com/wolverine-predator-duels-prey-marvel-comics/
