diff --git a/qad_graphic/graphic.cpp b/qad_graphic/graphic.cpp
index 2322e83..39d7155 100644
--- a/qad_graphic/graphic.cpp
+++ b/qad_graphic/graphic.cpp
@@ -897,24 +897,21 @@ void Graphic::drawGrid() {
 	if (axis_type_x == Graphic::Numeric) {
 		if (grad_x == Graphic::Auto) step = splitRange(range, wid / gridx / font_sz.width() * 1.4);
 		else step = gridx;//range / wid * gridx;
-	} else
-		step = splitRangeDate(range, wid / gridx / font_sz.width() * 1.4, &df);
-	start = roundTo(canvas2realX(wid), step) + step;
-	px = start + step;
-	if (step > 0.) {
-		cnt = 1000;
-		while (cnt-- > 0) {
-			px -= step;
-			if (fabs(px) < step * .5) px = 0.;
-			cx = real2canvasX(px);
-			if (cx > cwid) continue;
-			if (cx < gbx) break;
-			painter->setPen(grid_pen);
-			painter->drawLine(cx, hei + 5, cx, 0);
-			painter->setPen(text_color);
-			int dx = -font_sz.height() / 4.;
-			painter->setFont(nf);
-			if (axis_type_x == Graphic::Numeric) {
+		start = roundTo(canvas2realX(wid), step) + step;
+		px = start + step;
+		if (step > 0.) {
+			cnt = 1000;
+			while (cnt-- > 0) {
+				px -= step;
+				if (fabs(px) < step * .5) px = 0.;
+				cx = real2canvasX(px);
+				if (cx > cwid) continue;
+				if (cx < gbx) break;
+				painter->setPen(grid_pen);
+				painter->drawLine(cx, hei + 5, cx, 0);
+				painter->setPen(text_color);
+				int dx = -font_sz.height() / 4.;
+				painter->setFont(nf);
 				str = gridMark(px * grid_numbers_x);
 				rect = fm.boundingRect(str.first);
 				painter->drawText(cx + dx, cy, str.first);
@@ -924,8 +921,35 @@ void Graphic::drawGrid() {
 					painter->setFont(sf);
 					painter->drawText(cx + dx, cy - font_sz.height() / 2.5, str.second);
 				}
-			} else {
-				str.first = QDateTime::fromMSecsSinceEpoch(px * grid_numbers_x).toString(df);
+			}
+		}
+	} else {
+		int cur_scl[7] = {0,0,0,0,0,0,0};
+		step = splitRangeDate(range, wid / gridx / font_sz.width() * 1.4, &df, cur_scl);
+		start = roundTo(canvas2realX(wid), step) + step;
+		px = start + step;
+		QDateTime cd = QDateTime::fromMSecsSinceEpoch(px * grid_numbers_x);
+		//qDebug() << "*** start" << cd << step;
+		roundDateTime(cd, cur_scl);
+		//qDebug() << "*** round" << cd;
+		addDateTime(cd, cur_scl);
+		//qDebug() << "***   add" << cd;
+		//qDebug() << "*** cur" << cur_scl[0] << cur_scl[1] << cur_scl[2] << cur_scl[3] << cur_scl[4] << cur_scl[5] << cur_scl[6];
+		if (step > 0.) {
+			cnt = 1000;
+			while (cnt-- > 0) {
+				addDateTime(cd, cur_scl, -1);
+				//roundDateTime(cd, cur_scl);
+				//qDebug() << "next" << cd;
+				cx = real2canvasX(cd.toMSecsSinceEpoch() / grid_numbers_x);
+				if (cx > cwid) continue;
+				if (cx < gbx) {/*qDebug() << cx << "<" << gbx;*/ break;}
+				painter->setPen(grid_pen);
+				painter->drawLine(cx, hei + 5, cx, 0);
+				painter->setPen(text_color);
+				int dx = -font_sz.height() / 4.;
+				painter->setFont(nf);
+				str.first = cd.toString(df);
 				painter->drawText(cx + dx, cy, str.first);
 			}
 		}
@@ -1068,15 +1092,16 @@ double Graphic::splitRange(double range, int count) {
 }
 
 
-double Graphic::splitRangeDate(double range, int count, QString * format) {
+double Graphic::splitRangeDate(double range, int count, QString * format, int step[7]) {
 	double ret = splitRange(range, count);
-	if (ret < 1000. * 1) *format = "ss.zzz";
-	else if (ret < 1000. * 60) *format = "h:m:ss";
-	else if (ret < 1000. * 60 * 60) *format = "h:mm";
-	else if (ret < 1000. * 60 * 60 * 24) *format = "dd(ddd) hh";
-	else if (ret < 1000. * 60 * 60 * 24 * 30) *format = "MMM dd";
-	else if (ret < 1000. * 60 * 60 * 24 * 30 * 12) *format = "yyyy MMM";
-	else *format = "yyyy";
+	//qDebug() << "ret =" << ret << getScaleX();
+	if (ret < 1000. * 1) {*format = "ss.zzz"; step[0] = ret;}
+	else if (ret < 1000. * 60) {*format = "h:m:ss"; step[1] = qRound(ret / 1000);}
+	else if (ret < 1000. * 60 * 60) {*format = "h:mm"; step[2] = qRound(ret / 1000 / 60);}
+	else if (ret < 1000. * 60 * 60 * 24) {*format = "dd(ddd) hh"; step[3] = qRound(ret / 1000 / 60 / 60);}
+	else if (ret < 1000. * 60 * 60 * 24 * 30) {*format = "MMM dd"; step[4] = qRound(ret / 1000 / 60 / 60 / 24);}
+	else if (ret < 1000. * 60 * 60 * 24 * 30 * 12) {*format = "yyyy MMM"; step[5] = qRound(ret / 1000 / 60 / 60 / 24 / 30);}
+	else {*format = "yyyy"; step[6] = qRound(ret / 1000 / 60 / 60 / 24 / 30 / 12);}
 	return ret;
 }
 
@@ -1087,6 +1112,30 @@ double Graphic::roundTo(double value, double round_to) {
 }
 
 
+void Graphic::roundDateTime(QDateTime & dt, int c[7]) {
+	QDate d(dt.date()); QTime t(dt.time());
+	//if (c[0] != 0) t.setHMS(t.hour(), t.minute(), t.second(), 0);
+	if (c[1] != 0) t.setHMS(t.hour(), t.minute(), t.second());
+	if (c[2] != 0) t.setHMS(t.hour(), t.minute(), 0);
+	if (c[3] != 0) t.setHMS(t.hour(), 0, 0);
+	if (c[4] != 0) {t.setHMS(0, 0, 0); d.setDate(d.year(), d.month(), d.day());}
+	if (c[5] != 0) {t.setHMS(0, 0, 0); d.setDate(d.year(), d.month(), 1);}
+	if (c[6] != 0) {t.setHMS(0, 0, 0); d.setDate(d.year(), 1, 1);}
+	dt = QDateTime(d, t);
+}
+
+
+void Graphic::addDateTime(QDateTime & dt, int c[7], int mul) {
+	if (c[0] != 0) dt = dt.addMSecs(mul * c[0]);
+	if (c[1] != 0) dt = dt.addSecs(mul * c[1]);
+	if (c[2] != 0) dt = dt.addSecs(mul * c[2] * 60);
+	if (c[3] != 0) dt = dt.addSecs(mul * c[3] * 60 * 60);
+	if (c[4] != 0) dt = dt.addDays(mul * c[4]);
+	if (c[5] != 0) dt = dt.addMonths(mul * c[5]);
+	if (c[6] != 0) dt = dt.addYears(mul * c[6]);
+}
+
+
 double Graphic::canvas2realX(double px) const {
 	int gbx = gridborder.x() + margins_.left(), cwid = lastw, wid = cwid - gbx - margins_.width();
 	double cx = px - gbx, sclx = selrect.width() / (double)wid;
diff --git a/qad_graphic/graphic.h b/qad_graphic/graphic.h
index 3cdf8b5..8a1688f 100644
--- a/qad_graphic/graphic.h
+++ b/qad_graphic/graphic.h
@@ -355,8 +355,10 @@ protected:
 	void setRectToLines();
 	void checkLines();
 	double splitRange(double range, int count = 1);
-	double splitRangeDate(double range, int count = 1, QString * format = 0);
+	double splitRangeDate(double range, int count = 1, QString * format = 0, int step[7] = 0);
 	double roundTo(double value, double round_to);
+	void roundDateTime(QDateTime & dt, int c[7]);
+	void addDateTime(QDateTime & dt, int c[7], int mul = 1);
 	QPointF absPoint(QPointF point) {return QPointF(qAbs(point.x()), qAbs(point.y()));}
 	QString pointCoords(QPointF point);
 	QPair<QString, QString> gridMark(double v) const;