Bing has at last extended its date search options. Until recently one could only limit results to the past 24 hours, past week or the past month, and then only in Bing US. Bing has now added a custom range on a par with Google.
The UK version of Bing has not had a date option until now but bizarrely has added the old, limited US selection.
It seems very strange that they haven’t implemented the full US list. One can but hope that it will happen soon rather than in several years time, which is how long it has taken for this version to appear in Bing UK.