apt - Unable to find the .lit file reader app clit

I have some lit files I want to convert from Microsoft reader files to something my other devices can read. My friend says I should have clit, in

$ which clit
/usr/bin/clit

but I cannot find it. I tried locate clit but the results are unrelated. So then I tried sudo apt-get install clit but it says package not found.
Is clit a standard package? where can I find it?

Download Calibre - this will read your LIT format files, and also be able to convert them to other formats.

OR

you can install the clit program by sudo apt-get install convlit