"Looking for the Longitude" was published as a sequence over 12 days to coincide with the anniversary of the Hogarth Act, culminating on 25 June. Looking for “the Longitude” takes us on an interactive exploration of the ‘Longitude Problem’, drawing in contributions from experts in the field as it grows. Locating a detail from the final plate of Hogarth’s A Rake’s Progress as its starting point, the article will unfold over subsequent weeks to include a range of connected images and objects, including a Twitter tour of associated places and sites.