### Body

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"""Get Execution Data, Base Date & Number of runs from a Request."""
    date_time = www_request.args.get("execution_date")
    run_id = www_request.args.get("run_id")
    
    if run_id:
        dagrun = dag.get_dagrun(run_id=run_id, session=session)
        date_time = dagrun.execution_date
    elif date_time:
        date_time = _safe_parse_datetime(date_time)
    else:
        date_time = dag.get_latest_execution_date(session=session) or timezone.utcnow()
    base_date = www_request.args.get("base_date")
    if base_date:
        base_date = _safe_parse_datetime(base_date)
    else:
        
        
        base_date = (date_time + datetime.timedelta(seconds=1)).replace(microsecond=0)
    default_dag_run = conf.getint("webserver", "default_dag_run_display_number")
    num_runs = www_request.args.get("num_runs", default=default_dag_run, type=int)