The following FASTBUGS have been uploaded to

http://ftp.scientificlinux.org/linux/scientific/6x/i386/updates/fastbugs/
http://ftp.scientificlinux.org/linux/scientific/6x/x86_64/updates/fastbugs/

i386:
6x/i386/tzdata-2020a-1.el6.noarch.rpm
6x/i386/tzdata-java-2020a-1.el6.noarch.rpm

x86_64:
6x/x86_64/tzdata-2020a-1.el6.noarch.rpm
6x/x86_64/tzdata-java-2020a-1.el6.noarch.rpm