[waisbrot]

The article is mostly talking about using the `cron` scheduler and running things at 2am on Sunday because there's especially low traffic. These cron jobs are "I don't care when it runs, but it should have minimal chance of causing problems."

Your use-case is totally different: "I want this job to run at this time" so the only lesson that applies to you is that the `cron` utility might behave weird during DST switches. No idea if it underlies your cloud provider, so it may be completely irrelevant.