MODIS product MCD43A3 stating 16 periodicity but when downloadad I have files every 8 days

I'm downloading the MODIS derived Albedo 16-Day L3 Global 500 m resolution product. The info on the product does state:

Phased production strategy: Produced every 8 days with 16 days of acquisition (i.e., production period 2001001 includes acquisition between Days 001 and 016, production period 2001009 includes acquisition between Days 009 and 024)

Could this be related to me obtaining files with an 8 day periodicity? and if so could someone explain this to me?