The 0005 hours, just after midnight SQ218 from MEL to SIN is generally reliable and punctual. I have used this a few times and it has been thus.
However on Wednesday 31 July, A380 9V-SKN did not become airborne until 0738 hours. Arrival should be at 1315, 435 minutes tardy. This was due to the inbound SQ217 not taking of from SIN yesterday until 2059 compared with its 1100 timetabled late morning departure, so MEL arrival on 3 July was 0340 instead of 2025 on 30 July. An A388 must have failed, as this aircraft came in to SIN half an hour early yesterday at 1650 hours on SQ637 from NRT and was then purloined to operate the MEL-bound flight.
I assume that delaying the departure until 0717 hours was because SQ had advance notice of this delay and hence passengers may have been put up in hotels if they were not local Melbourne residents.