How can I change the time range of my aws cloudwatch dashboard permanently?

Question

I want to set the time range of my dashboard permanently to 1 day. Unfortunately it will jump back to 3 hours when doing a browser refresh. Also each dashboard should have its own time range. So for example dashboard 1 should have 1 day time range and dashboard 2 should have 1 month time range by default. How can I achieve that?

Answer 1

Set the dashboard range to what you want, then click Actions -> Set default time range. In the popup, select the first option: Always load this dashboard using the current time range setting. Save the dashboard after that.

If you want to do it through code or CloudFormation, set the start parameter in the dashboard source. Like this:

{
  "start": "-P1D",
  "widgets": [
   ...
   ]
}