Hi Paul
Registrations after 1837 but prior to 1984 are compiled in 4 quarters Jan/Feb/Mar (March 1/4) April/May/June (June 1/4) July/Aug/Sept (Sept 1/4) and Oct/Nov/Dec (Dec 1/4). After 1984 they are compiled yearly with registrations recorded monthly.
freebmd confirms that the marriage was regiestered in the September 1/4 of 1944, the marriage took place in one of the 3 months making up that 1/4, either July, August or September.
Dawn