Working day = Will inconvenience many working people, so scarly
got accident, more likely got someone kpkb make it to national
newspapers, being educated and all.
Sunday = Lesser problems since got nobody working. So less likely
got complaint if got accident.
Hello, you're Singaporean, right? You shall know how we do things.

Beside, got grassroots leaders and staff as "volunteers", right?
See, all signs point to this Sunday. 