In Programs and Features control panel there is a Last Used On column. However, it doesn’t appear by default, and if you turn it on, the column is simply blank. This is actually by design. The control panel applet used to guess but it’s heuristics were so inaccurate that the idea was abandoned. However as I’ve discussed before, once installed, Install Monitor automatically gets accurate information on what programs are being used and how often they are used. This can be seen in the Last Used and Usage columns.