No, it looks like it was run 1h afterwards. I am using the standard email template which includes the run duration, and since it is a very simple test report template, it only takes it under 2 seconds to complete. Last one took 1.92 seconds.
And well, I have been using the email when the report gets to me, and that happens exactly 1 hour after the schedule. It is the Excel reports module, v3.5.1. My user (which is the Superadmin and creator of the report) is set to America/Mexico_City, and I can see the CST abbreviation under the time and date on the menu side bar, which is correct.
And yes, that's also strange, if I run it with Run Now it gets generated and sent instantly.
What I initially thought was programming it for 1h before, but the information it generates would be lacking 1h. Also, the email would be wrong because it does display the correct Run Time Start.
It's as if the MangoES generated the report and just decided to wait exactly 1h to send it, but I am not sure if it generates it one hour later. I could check that out though, if it helps to bring more clarity to the issue.