const time.stdUnderDay

5 uses

	time (current package)
		format.go#L101: 	stdUnderDay                                    // "_2"
		format.go#L205: 				return layout[0:i], stdUnderDay, layout[i+2:]
		format.go#L570: 		case stdUnderDay:
		format.go#L904: 		case stdDay, stdUnderDay, stdZeroDay:
		format.go#L905: 			if std == stdUnderDay && len(value) > 0 && value[0] == ' ' {