const time.stdDay

4 uses

	time (current package)
		format.go#L140: 	stdDay                                         // "2"
		format.go#L248: 			return layout[0:i], stdDay, layout[i+1:]
		format.go#L724: 		case stdDay:
		format.go#L1122: 		case stdDay, stdUnderDay, stdZeroDay: