YEAR TT-UT PREDICTION UT1-UTC PREDICTION ERROR 2011.00 66.265 -0.081 0.000 2011.25 66.396 -0.213 0.000 2011.50 66.447 -0.344 0.02 2011.75 66.456 -0.470 0.06 2012.00 66.8 0.1 2012.25 66.9 0.2 2012.50 67.0 0.2 2012.75 67.1 0.3 2013.00 67.3 0.4 2013.25 67.4 0.4 2013.50 67.4 0.5 2013.75 67.6 0.7 2014.00 67.7 0.8 2014.25 67.8 0.9 2014.50 68. 1. 2014.75 68. 1. 2015.00 68. 1. 2015.25 68. 1. 2015.50 68. 2. 2015.75 69. 2. 2016.00 69. 2. 2016.25 69. 2. 2016.50 69. 2. 2016.75 69. 2. 2017.00 69. 2. 2017.25 69. 3. 2017.50 69. 3. 2017.75 70. 3. 2018.00 70. 3. 2018.25 70. 3. 2018.50 70. 3. 2018.75 70. 3. 2019.00 70. 4. 2019.25 70. 4. 2019.50 70. 4. 2019.75 71. 4. 2020.00 71. 4.