aperance. If this is not to your liking, you can use this switch
to turn this behaviour off.
+Gridfitting is turned off for PDF, EPS, SVG output by default.
+
=item Grid
=over 4
and labels every 4 hours. The labels are placed under the major grid
lines as they specify exactly that time.
- --x-grid HOUR:8:DAY:1:DAY:1:0:%A
+ --x-grid HOUR:8:DAY:1:DAY:1:86400:%A
This places grid lines every 8 hours, major grid lines and labels
each day. The labels are placed exactly between two major grid lines