public void DrawDays(Graphics graphics, RectangleF outer, RectangleF inner, PointF[] points)
        {
            if (!points.Any()) throw new ArgumentException();

            var brush = GetSolidBrush(LineColor);
            var textBrush = GetSolidBrush(Color);
            var font = GetFont("Arial", 12);
            var oldest = GetOldestMondaiResult();
            var newest = GetNewestMondaiResult();
            var height = outer.Bottom - inner.Bottom;
            //			var oldestRectangle = new RectangleF(outer.Left, inner.Bottom, 100f, height);
            var oldestRectangle = new RectangleF(points.Last().X, inner.Bottom, 100f, height);
            var newestRectangle = new RectangleF(points.First().X, inner.Bottom, 100f, height);
            var stringFormat = new StringFormat()
            {
                Alignment = StringAlignment.Near,
                LineAlignment = StringAlignment.Near,
            };

            // 現在時刻からの最古の日数と最新の日数を表示。最新の日数は最古の日数と被らない限り表示する。
            //			var d0 = MondaiResult.GetStringFromTimeSpan(EPuzzleTime.Now - oldest.StartTime);
            var d0 = (EPuzzleTime.Now - oldest.StartTime).GetShortString();

            var size0 = MeasureString(d0, font);
            //			oldestRectangle.X -= size0.Width / 2f;
            var r0 = new RectangleF(oldestRectangle.Left, oldestRectangle.Top, size0.Width, size0.Height);
            graphics.DrawString(d0, font, textBrush, oldestRectangle, stringFormat);

            //			var d1 = MondaiResult.GetStringFromTimeSpan(EPuzzleTime.Now - newest.StartTime);
            var d1 = (EPuzzleTime.Now - newest.StartTime).GetShortString();

            var size1 = MeasureString(d1, font);
            newestRectangle.X -= size1.Width / 2f;
            var r1 = new RectangleF(newestRectangle.Left, newestRectangle.Top, size1.Width, size1.Height);
            if (!r0.IntersectsWith(r1))
            {
                graphics.DrawString(d1, font, textBrush, newestRectangle, stringFormat);
            }

            if (2 > points.Count()) return;
            var newest2 = OrderedItems[1];
            var newest2Rectangle = new RectangleF(points[1].X, inner.Bottom, 100f, height);
            //			var d2 = MondaiResult.GetStringFromTimeSpan(EPuzzleTime.Now - newest2.StartTime);
            var d2 = (EPuzzleTime.Now - newest2.StartTime).GetShortString();

            var size2 = MeasureString(d2, font);
            newest2Rectangle.X -= size2.Width / 2f;
            var r2 = new RectangleF(newest2Rectangle.Left, newest2Rectangle.Top, size2.Width, size2.Height);
            if (!(r0.IntersectsWith(r2) || r1.IntersectsWith(r2)))
            {
                graphics.DrawString(d2, font, textBrush, newest2Rectangle, stringFormat);
            }
        }