schwartzpub commented on issue #29037:
URL: https://github.com/apache/airflow/issues/29037#issuecomment-1397824977

   Last run/next run aside -- what other details are needed that aren't 
provided above?  For reference, the documentation for 2.5 is where the 
recommendation for `default_timezone = UTC` came from.
   
   The dag definition is as follows:
   ```python
   from datetime import datetime, timedelta
   from airflow import DAG
   from airflow.models import Variable
   
   from airflow.operators.bash import BashOperator
   
   import pendulum
   
   with DAG(
       "test_dataflow",
       default_args = {
           "depends_on_past": False,
           "email": ["t...@test.com"],
           "email_on_failure": False,
       },
       description="Test Dataflow",
       schedule="*/15 6-17 * * 1-5",
       start_date=pendulum.datetime(2023,1,19,6,tz='America/Chicago'),
       catchup=False,
   ) as dag:
       ssis_p = Variable.get("ssis_password")
       bash_comm = "/opt/ssis/bin/dtexec /f 
/home/airflow/airflow/ssis/Package.dtsx /de {0} /l 
'DTS.LogProviderTextFile;ssis.txt'".format(ssis_p)
       t1 = BashOperator(
           task_id="ssis_dataflow",
           bash_command=bash_comm
       )
   
       t1
   ```
   
   The local server is set to CST
   ```
   user@host:~$ sudo timedatectl
       Local time: Thu 2023-01-19 06:44:37 CST
       Universal time: Thu 2023-01-19 12:44:37 UTC
       RTC time: Thu 2023-01-19 12:44:36
       Time zone: America/Chicago (CST, -0600)
   System clock synchronized: yes
       NTP service: active
       RTC in local TZ: no
   ```
   
   The airflow.cfg is currently set to UTC but changing to `America/Chicago` 
and restarting the schedulre and webserver services doesn't change the behavior:
   ```
       default_timezone = utc
   ```
   
   I cannot provide a screenshot since the run times in the UI are not a good 
indicator (if there is a screenshot that can show this, I can certainly provide 
one), but given the above configurations I would expect the first run each 
weekday to happen at 6:15a CST.  Instead, the first run of the day happens at 
12:15pm CST. When I check the DAG in the morning(s) and through to the 
afternoon there are no new runs until 12:15pm CST.
   
   If there is any other information I can provide that might be missing here, 
please let me know so I can provide it.


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