The following components have a new config option to allow time labels to be rotated. It is not a recommended practice, as it can be uncomfortable for users to read, but a slight rotation (negative rotation for ltr writing systems) can help showing long labels, if using abbreviations is not allowed by your requirements.
VueUiXy
config.chart.grid.labels.xAxisLabels.rotation
VueUiQuickChart
config.xyPeriodLabelsRotation