Timezones and Docker
Depending on your business need, setting the appropriate timezone is critical. Let's see how to do that.
Last year, I worked on a Python application deployed onto Microsoft Azure. This app included a set of recurring tasks that were configured with a CRON schedule using the APScheduler package.
However, quickly after deployment, I noticed that the task was running 2 hours behind my current time (GMT+2).
Though it wasn’t a big problem at the time, after the hour change on October 27, 2025, it became an issue…
In fact, the application was responsible for sending SMS reminders for an on-call schedule to a team of people. However, following the time change, these notifications about a person’s current status as being “on call” or the end of their session were delayed by one full day.
Let’s ⏩ look at the reason and solution in the full article ⏪