Originally Posted by
lokijuh
Doesn't apply for SQ 634, but for SQ11, for probably half of the passengers, it's already 9pm (body clock time) by the time of pushback ... so it probably feels like a late dinner ....

Ah yes - half of them were from LAX. This sounds much more plausible than all the other explanations!
But that also means the satay was loaded in Singapore well over 24 hours before.