The analytics' timing on the x-axis should match the user's local time - just like how it displays on Cloudflare's actual analytics page (also like how GADWP does it).
I know this is a super old repo, but thought I would try posting issue anyway as it looks like a nice Dashboard Widget. Upon activation, with API key & email, the following error is reported:
Unable to connect to CloudFlare :: Invalid request headers - Invalid format for X-Auth-Key header
When hovering over a point on the graph it displays the data on the preceding and subsequent point as well - when viewing in certain modes like for the past 24hrs, this doesn't work too well as some of the data gets blocked. IMO better to keep the data display at a single point.