Queries :: Return Multiple Rows From A Single Record In Database

For each record in my database, there are observation periods which are recorded in the format dd/mm/yyyy hh:mm:ss, titles as follows

1st Obs Start
1st Obs End
2nd Obs Start
2nd Obs End
3rd Obs Start
3rd Obs End.

I have been asked to create a query that will quickly show how many obervation periods commenced in a particular month. What I am trying to do is create a column that will be named Obs Start, and another, Obs End. For each record ID, this would then show as follows:

ID......Obs Start.............Obs End........
1....[1st Obs Start].....[1st Obs End]....
1....[2nd Obs Start]....[2nd Obs End]....
2....[1st Obs Start].....[1st Obs End]....
2....[2nd Obs Start]....[2nd Obs End]....
2....[3rd Obs Start].....[3rd Obs End]....
3....[1st Obs Start].....[1st Obs End]....
4....[1st Obs Start].....[1st Obs End]....

etc.

I could then quickly count how many obs periods started within the desired month.