wanlce opened a new issue #21594:
URL: https://github.com/apache/airflow/issues/21594


   ### Apache Airflow version
   
   main (development)
   
   ### What happened
   
   New version of the timetables issue
   
   eg:
   At first I had a scheduling time of 30 * * * * *
   After running it twice, I changed it to 32 * * * *
   The actual first run time after the change is fine, but because the data 
interval starts from the end of the previous interval, it has already been 
determined and not refreshed, so the displayed execution_date is incorrect.   
This can cause problems with Cross-dag dependencies.
   
   
![2022-02-15_23-34](https://user-images.githubusercontent.com/55907021/154095279-27cf10cf-04d2-4849-a1a5-0ecbab92e19e.png)
  |  
![2022-02-15_23-36](https://user-images.githubusercontent.com/55907021/154095460-fea4fe68-8bbb-45ff-96c7-ec28c42cbfbe.png)
   --- | ---
   
   Correct:
   
![2022-02-15_23-26](https://user-images.githubusercontent.com/55907021/154099117-78bb4fe1-9c14-4073-905f-3dc6493ef27f.png)
  | 
![2022-02-15_23-27](https://user-images.githubusercontent.com/55907021/154099134-697d9ad3-6f4d-48b9-af51-fd93f8a18df9.png)
   --- | ---
   
   
https://github.com/apache/airflow/blob/f1db4524deb0ec354d3561e8ad22f81c7d08bc3c/airflow/timetables/interval.py#L93-L97
   
   My current solution is to add start = self._get_prev(end) below end = 
self._get_next(start) to reset data_interval_start.
   I'm not sure if this is appropriate
   Looking forward to new ideas
   
   ### What you expected to happen
   
   _No response_
   
   ### How to reproduce
   
   _No response_
   
   ### Operating System
   
   ubuntu21.10
   
   ### Versions of Apache Airflow Providers
   
   _No response_
   
   ### Deployment
   
   Virtualenv installation
   
   ### Deployment details
   
   _No response_
   
   ### Anything else
   
   _No response_
   
   ### Are you willing to submit PR?
   
   - [X] Yes I am willing to submit a PR!
   
   ### Code of Conduct
   
   - [X] I agree to follow this project's [Code of 
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
   


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