The pipeline stage view displays the build time using local time (i.e. my personal time zone).

While the left hand build list shows in UTC.

(yes, the screenshots are from the same build! I will investigate the different status indicators shortly!!)

Jenkins - 1.651.2
Pipeline Stage View Plugin - 1.4

Stage View: Local time (+1000)
Build View (left hand): UTC (+0000)
Operating System: UTC (+0000)
Jenkins Timezone: UTC

I'm not opposed to local time, but my preference is for consistency (and a hover showing exact UTC time)