When was my indexes in the database fragmented?

I am trying to create a script that finds the index fragmentation, have it log to a table that I can query each time it runs. I need to fins out specifically what time my indexes in a table get fragmented. Below is the script I have so far to find the index fragmentation. What can I add to:

  1. find the time indexes are fragmented
  2. have it log to a table

Thanks in advance.

SELECT S.name as 'Schema', T.name as 'Table', I.name as 'Index', DDIPS.avg_fragmentation_in_percent, DDIPS.page_count FROM sys.dm_db_index_physical_stats (DB_ID(), NULL, NULL, NULL, NULL) AS DDIPS INNER JOIN sys.tables T on T.object_id = DDIPS.object_id INNER JOIN sys.schemas S on T.schema_id = S.schema_id INNER JOIN sys.indexes I ON I.object_id = DDIPS.object_id AND DDIPS.index_id = I.index_id WHERE DDIPS.database_id = DB_ID() and I.name is not null AND DDIPS.avg_fragmentation_in_percent > 30 and DDIPS.page_count > 1000 ORDER BY DDIPS.avg_fragmentation_in_percent desc