If you have your own dashboard you can change default timeframe by configuration:
https://www.dynatrace.com/support/help/shortlink/custom-dashboards#default-filters
Using one day as default period isn't good idea, going from dashboard to transaction data you will wait really long for view generation because of data collection. But I agree that 1 hour period available on time picker may be handy 🙂
Sebastian
Regards, Sebastian
