Admin Forum:How to make cached timestamp independent of time-zone?

I discovered that the system message MediaWiki:Perfcachedts, used on pages such as Special:WantedPages, is affected by the time-zone offset in personal preferences. Does anyone know whether there is a way to make it show a timezone-independent timestamp (UTC preferably)? -- BryghtShadow 07:34, February 26, 2012 (UTC)