All I do is to interrogate your pages for which data is available either gfsn_report.txt or ecmwf_report.txt and as my system runs on BST in summer that is the current UK time it records not UTC at present which explains the confusion. So basically in summer I need to run each forecast about 1 hour later and switch back in winter.
I just wish we did not switch times, I’d much prefer GMT+1 for all year round!
Stuart