8. The method of claim 1 wherein: determining at least one date includes determining a plurality of dates for the query; and the method further comprises processing the query based on the plurality of dates.
8. The method of claim 1 wherein: determining at least one date includes determining a plurality of dates for the query; and the method further comprises processing the query based on the plurality of dates. 9. The method of claim 8 wherein processing the query based on the plurality of dates includes including, in search results for the query, items associated with each of the plurality of dates.