Interesting thought, Paco:
| You cannot use 'during' when you [can?] specify more particularly the time in the said time span. |
|
I wouldn't hold strictly to the prohibition, but there is considerable truth in that observation, I think. 'I was born during 1985' sounds indeed 'off', but 'I was born during the summer of 1985' does not. Why, do you suppose?
(One other point-- I think you have incorporated an idiom, at least in AmE, where we would say '
on (the) vacation' rather than 'in'.)