Our system determines the optimal time for updating the rankings, and all the rankings are refreshed on a regular daily basis (in 24h intervals).
We don't encourage on-demand updates and custom update times because they add to anomalies of the data when rankings are refreshed in irregular intervals. The best way to ensure the highest accuracy and reduce anomalies in the data is to ensure that all keywords are updated regularly.
This is one of the reasons why our tool is more accurate and preferred by most experts.