Former President Jimmy Carter has marked many milestones in his life but in just a few days he will become the oldest living president.
The 39th president of the United States marked the 40th anniversary of his inauguration in 2017 and celebrated his 74th wedding anniversary with wife Rosalynn Carter earlier this year.
On Oct. 1 he is turning 96 years old making him the longest-living former president in U.S history.
People all over the world are being invited to celebrate this special occasion by sending him a birthday message online through the Carter Center.