execution_date and schedule_id date same in log

[assadali007]

In log execution_date and scheduled_Id are same why is that Execution mean the first dag run after the end of the interval

AIRFLOW_CTX_EXECUTION_DATE=2019-01-01T00:00:00+00:00
AIRFLOW_CTX_TRY_NUMBER=1
AIRFLOW_CTX_DAG_RUN_ID=scheduled__2019-01-01T00:00:00+00:00