Auctions will be closed from the 11th of August until the 16th of August, but from the 16th to the 19th they will be very much reduced in number

Also office hours, the office (not necessarily bidding) will be closed from the 11th of August until the 16th of August

In picture format:

Auction and office holiday times

And in more detail for actual auctions:

Auctual auction holidays

Note very reduced auctions from the 16th until the 19th