Original: At this time the township developed and the Post Office opened on September 4, 1863 (closed in 1971, though offices at Greta West and Greta South remained open until 1994).
Simplified: At this time the township started with the Post Office opened on September 4, 1863. It closed in 1971, though post offices at Greta West and Greta South remained open until 1994.