Hi,
I tried to use the dateTime format of an X Axis and it works well, but only as long as I do not use a second X Axis that is not using dateTime.
This happens when using 1.9.5.
(You can reproduce easily by creating a chart with two x axis, one with a dateTime series and one with normal numbers) When you “hide” the other, the dateTime X Labels are fine. If it is visible the X Labels of the dateTime show the JS milliseconds since the epoch.
Regards,
Christian