break;
case 'v': // %v Week (01..53), where Monday is the first day of the week; used with %x
builder.appendWeekOfWeekyear(2);
break;
case 'x': // %x Year for the week, where Monday is the first day of the week, numeric, four digits; used with %v
builder.appendWeekyear(4, 4);
break;
case 'W': // %W Weekday name (Sunday..Saturday)
builder.appendDayOfWeekText();
break;
case 'w': // %w Day of the week (0=Sunday..6=Saturday)