Information about each of WTE's 11  timezone changes for year 2007:

2007c1 of 2007-Feb-26

2007c2 of 2007-Mar-04

2007d1 of 2007-Mar-29

2007e1 of 2007-Apr-07

2007e2 of 2007-Apr-27

2007f1 of 2007-May-13

2007g1 of 2007-Aug-19

2007h1 of 2007-Oct-13

2007i1 of 2007-Oct-27

2007j1 of 2007-Dec-09

2007k1 of 2007-Dec-26