From the year 1000 to the year 9876, if we ignore the centuries that start with two repeating digits, like 1100, 2200, 3300, 4400, 5500, etc., then we have this "ranking":



- In first place, comes the interval from 8977 until 9011, with 34 consecutive years


- Tied in second place, come the intervals from 1988 to 2012, and from 7987 to 8011, both with 25 consecutive years


- In third place, come the other intervals in the other "millenium changes", like from 2988 to 3011, 3988 to 4011, and 6988 to 7011, with 24 consecutive years each....



Reminding that it's only the case if we ignore the centuries that start with two repeating digits, like 1100, 2200, 3300, 4400, 5500, etc....