The Day After Meaning?

Thanks Kari.

Here is the comics screenshot that discussed in forums:

I would say that each panel means one day. The panel captions are linked with three dots ( ... ), so the ”day after” in this case means the third day, but it is so because of the ”link” to the previous panel (”the following day”) So the third panel describes the situation ”day after the day following the next morning”

Unless, of course, Daily Reporter, the newspaper, has separate morning and afternoon editions, in which case ”the next morning” and ”the following day” would be the same day. Gets kinda complicated  

I have read that story, never gave much thought to that part.

I wonder how it was written originally in French?

As an exemplary Belgian, I have all the Tintin albums and much more Tintin related stuff. In the original text it says "encore un jour après" . It is the 3rd day.

Thank you. Everything is clear now