From Longman Dictionary of Contemporary Englishthe day/week etc after nextthe day/week etc after nextTMCthe day, week etc that follows the next one Have you remembered it’s Susie’s birthday the week after next? → next
Examples from the Corpus
the day/week etc after next• I think it might be the week after next.• The case will be heard in London's High Court the week after next.• We shall meet the day after next.• From them I learned that the coronation was to be on the day after next, and not in three weeks.• We won't be able to cut the grass the week after next, as I'd hoped. 