I don’t know much about server automation, but this does seem incorrect, it does seem like the action is set to be open for 2 days and not for 2 hours. I’m not sure what the minimum time an action can be open for, but you can have it be open for over a day, but constrain it to run only between certain hours of the day.
If I were not using server automation and was deploying something myself, this is probably how I would get something to run on the 26th between 4:30am and 6:30am
This seems like what you were going for, but a bit different than the above:
I wonder if the reason this happened was that 6:30am on the 22nd had already happened, therefor the console rejected the end time and used the default or something odd like that.