Are 'here' and 'now' indexicals?

It is argued there is nothing special or deviant about the use of 'now' to refer to a time in the past (or about the use of 'here' to refer to a distant place) — no need to appeal to pragmatic mechanisms such as context-shifting to account for such uses. Such uses are puzzling only if one (mistakenly) maintains that 'here' and 'now' are pure indexicals. In the paper it is claimed that they are more similar to demonstratives than to pure indexicals