I am trying to plot temperature data points according to their time recording.

t = ['2021-12-11T0:6:15', '2021-12-11T7:15', '2021-12-11T8:15', '2021-12-11T9:15', '2021-12-11T10:15']

temp = [33.6, 33.6, 33.6, 33.6, 33.6]

Note: as you have mentioned t is represented without hour, the reason is that temp been collected in hour:second.

t is a string representing the date and time in ISO 8601 format (ref:

For more advanced strategies, such as sub-classing AxisItem for custom tickStrings generator, please refer to this