catch unknown timezone and fall-back to UTC
catch unknown timezone and fall-back to UTC

andreas-p/nextcloud-server,jbicha/server,jbicha/server,xx621998xx/server,jbicha/server,endsguy/server,jbicha/server,pmattern/server,nextcloud/server,michaelletzgus/nextcloud-server,bluelml/core,IljaN/core,endsguy/server,pollopolea/core,owncloud/core,bluelml/core,pollopolea/core,cernbox/core,owncloud/core,pmattern/server,pixelipo/server,pixelipo/server,owncloud/core,cernbox/core,sharidas/core,Ardinis/server,IljaN/core,endsguy/server,nextcloud/server,xx621998xx/server,phil-davis/core,IljaN/core,lrytz/core,whitekiba/server,pmattern/server,cernbox/core,xx621998xx/server,whitekiba/server,nextcloud/server,pollopolea/core,owncloud/core,bluelml/core,sharidas/core,lrytz/core,xx621998xx/server,lrytz/core,whitekiba/server,Ardinis/server,jbicha/server,andreas-p/nextcloud-server,IljaN/core,Ardinis/server,michaelletzgus/nextcloud-server,endsguy/server,Ardinis/server,pmattern/server,pollopolea/core,pixelipo/server,lrytz/core,pollopolea/core,sharidas/core,sharidas/core,IljaN/core,whitekiba/server,sharidas/core,whitekiba/server,cernbox/core,owncloud/core,pmattern/server,Ardinis/server,bluelml/core,pixelipo/server,xx621998xx/server,andreas-p/nextcloud-server,andreas-p/nextcloud-server,michaelletzgus/nextcloud-server,bluelml/core,michaelletzgus/nextcloud-server,nextcloud/server,cernbox/core,pixelipo/server,andreas-p/nextcloud-server,lrytz/core,endsguy/server