For his first term in 1789 he took the oath of office on April 30th...see even the great arrive late but then again I can move faster than Washington ever could.
Franklin D. Roosevelt became the last POTUS sworn-in on a March 4th for his 1st term in 1933, 7 months before the 20th Amendment took effect. Four years later in 1937, FDR would be the first sworn-in on a January 20th, the start of his second term. Apparently the numbers, one, three, seven and nine are important to first inaugurations days for second term presidents. Happy Old Inauguration Day!