CentOS Errata and Enhancement Advisory 2015:1863 

Upstream details at : https://rhn.redhat.com/errata/RHEA-2015-1863.html

The following updated files have been uploaded and are currently 
syncing to the mirrors: ( sha256sum Filename ) 

i386:
1ab030200a4b8326ce536add751e0d62130a0cf0d5ceb3c55d5bbdb69dd1360f  tzdata-2015g-1.el5.i386.rpm
3916a63973161e1baab95eca4f91c528df0ff30e3e65f5a665b72057d2fea6f8  tzdata-java-2015g-1.el5.i386.rpm

x86_64:
9724fd4da7d4e606d0587d46d1c6abf9db51361d601f5b06379307039e7a3edc  tzdata-2015g-1.el5.x86_64.rpm
55e0dd8e80657249398935bd9627703287eeb17f65e647e5b8a5b1242a320a5a  tzdata-java-2015g-1.el5.x86_64.rpm

Source:
2f675dd8beb518fe30acfb829784726758d322b195867ee095b060d1d8777fc8  tzdata-2015g-1.el5.src.rpm