The Use of "の時” in 二〇一五年間の時に


If I were to write "二〇一五年間の時に" for "during the year of 2015", would the "の時"
be redundant and/or grammatically incorrect due to the fact that the "間" in
"年間" already implies the meaning of "during this time period"?

If so, would "二〇一五年間に" or "二〇一五年の時に" perhaps be more valid alternatives?




As you said 二〇一五年間の時に is unnatural. If you say "during the year of 2015", you
say 二〇一五年に,二〇一五年の時に in Japanese but 二〇一五年間に is unnatural because 二〇一五年間 means
"for two thousand and fifteen years".

