Ответ:

1) I am meeting my friends this evening.

2.) I am not going out tonight .

3.) The concert starts at 8.15 .

4.) Tom is not coming to the party on Thursday.

5.) The English course finishs on 7 May .

6.) I am not going to London tomorrow.

7.) My sister is getting married next December.

8.) My train leaves at 8.45.