By default, the teachings are shown in the order they are added to the website. Not by the date they were actually recorded. So if we suddenly get a batch of recordings from 1999, they will appear at the top above anything recorded last month.
To change it to the most recent recordings, go to the main Archive section. At the top of all the teachings you will see the text “Organise Results by:”. Click on the selector beside that and chose “Date Newset-Oldest”.