Possible Clues:

• Hofmannsthal wrote this 24 hours ago?
• Recent past
• Redates changes between two years some time in the past
• Song about break-up from dearest, reeling in the years
• You strayed wickedly not so long ago
• Try a seedy concoction? It was finished at midnight
• Wild-eyed satyr of very recent history
• Song from not long ago?
• Song sung by this puzzle's subjects on 6-Down's show on 9/12/65
• The past