Complex sentence: By 09h15 on 24 August, these battle groups found themselves to far east due to a navigation error and lost time after correcting their error but resulted in the air attack on Xangongo being pushed back by one hour to 12h00.
Split into simpler sentences: By 09h15 on 24 August, these battle groups found themselves to far east due to a navigation error and lost time. After correcting their error, the air attack on Xangongo was pushed back by one hour to 12h00.