Here is the DAGs summary enter image description here
But if I click at the Last Run time, click at the red box, it directed me to DAG page. and the time is hour+1, even the time zone is the same. enter image description here
Also at log, its hour+1 from the home page. enter image description here
additional source. enter image description here
Thanks,
I want to know the cause, is that a bug or I misunderstood the concept.
Yes, it is not the same. The last run time refer to the data interval start in the DAG, whereas the timestamp in the second and third image refer to the data interval end in the DAG.