#define ISLEAP(y) (!((y)%4) && (((y) % 100) || (!((y)% 400))))
-/*static */Array<String> veryShortDaysNames
+/*static */Array<const String> veryShortDaysNames
{ [
$"Sunday"."S", $"Monday"."M", $"Tuesday"."T", $"Wednesday"."W",
$"Thursday"."T", $"Friday"."F", $"Saturday"."S"