At one stage in the calculations he became very puzzled since the data he had recorded seemed inconsistent, but he had forgotten to take into account the motion of the Earth round the sun.
Sa isang yugto sa kalkulasyon siya ay naging napaka-lito dahil sa ang data niya naitala seemed paiba-iba, ngunit siya had forgotten sa kumuha sa account ang galaw ng Earth sa lahat ng panig ng Linggo.