LaTeX - two columns within the same listing? - latex

Question

I'm trying to achieve the following but with no problems in spacing.
The image is what I'm trying to achieve but without the spacing problems :
At the moment it's just a normal listing with tabbing.
I want to avoid tabbing by introducing two columns. Is that possible?
Current code:
\begin{lstlisting}[caption=Elements of time in the background knowledge, label=btime]
year(Y):- hour(H):-
Y in 2000..2011. H in 0..23.
month(M):- minute(M):-
M in 1..12. M in 0..59.
day_of_month(D):- seconds(S):-
D in 1..31. minute(S).
date([D, M, Y]):- time([H,M]):-
year(Y), hour(H),
month(M), minute(M).
day_of_month(D).
\end{lstlisting}

Answer 1

Something like this (result looks like THIS)?
\begin{tabular}{p{7cm}p{7cm}}
year(Y):- & hour(H):- \\
\hspace{10mm}Y in 2000..2011. & \hspace{10mm} H in 0..23. \\
& \\
month(M):- & minute(M):- \\
\hspace{10mm} M in 1..12. & \hspace{10mm} M in 0..59. \\
& \\
day\_of\_month(D):- & seconds(S):- \\
\hspace{10mm} D in 1..31. & \hspace{10mm} minute(S). \\
& \\
date([D, M, Y]):- & \hspace{10mm} time([H,M]):- \\
\hspace{10mm} year(Y), & \hspace{15mm} hour(H), \\
\hspace{10mm} month(M), & \hspace{10mm} minute(M). \\
\hspace{10mm} day\_of\_month(D). & \\
\end{tabular}
Tweak the values p{Xcm} to get the column distance you want
Tweak the values \hspace{Xmm} to get the indentation you want
An alternative would be to use \quad or \qquad, though that might not be enough for you