Phút cuối cùng của ngày 30/6/2012 có 61 giây
Giới khoa học quốc tế quy ước cộng thêm 1 giây vào thời điểm cuối cùng của tháng 6 để thời gian nguyên tử quốc tế phù hợp với thời gian thiên văn.
4bueMsOZVTvDoeG7ruG6u+G6u+G7jFRl4bq8M+G6vcOhIVThu6BFMuG6v+G6vVU7w6rhurUzVTvhu4HhuqExVTvhu4Phu65V4bqhMVdqVeG7psOaL+G7qC/hu6TDmsOZ4bukVTvDo1Xhu6jDmVUxMz1q4bueLzLDmeG7oOG7nmVVO8Oh4buu4bq74bq74buMVGV3IeG7rixU4bugdjPhuqszVWEy4bqj4buuVTLhuq87VcOpw6rhurU7VeG6vX1Vw6nDqmpVZuG6qztVO+G6peG6oTFV4bq9MnvDoFXDmVUxMz1qVeG7i1fhuqNV4bq9MmIzVS4zIsOgVTvDquG6tTNVO+G7geG6oTFVO+G7g+G7rlXhur0yVuG6oTFV4buoVS4iVeG6vTJiM1UxM+G7ruG6oVXhuqExw6pqe+G6oVXhur3DrVXDqcOq4bq1O1Xhur19VWUy4buBVTJjZVXhu4vhuqszVeG6vTJiM1UxM+G7ruG6oVXhur0yM3vhuqFV4buL4buy4bqhxqDhu54vZeG7oOG7nmVVO8Oh4buu4bq74bq74buMVGVx4bqjLGpU4bug4bq8MiHhuqNVLsOj4buWVWUy4bq/4bq9VTvDquG6tTNVO+G7geG6oTFVO+G7g+G7rlXhuqExV2pV4bumw5ov4buoL+G7pMOaw5nhu6RVO8OjVeG7qMOZVTEzPWrGoOG7ni9l4bug4bueZVU7w6Hhu67hurvhurvhu4xUZXHhuqMsalThu6DhuqAyV1VhMuG6o+G7rlUy4bqvO1XhuqDhuqMhw6FVczPDoOG7ruG6uTvDqeG7llV2M1bDoFUu4bq1O1VFMsSD4bqhMVXhurwyNFXhuqExMjNdw6BVMl1V4bq9MuG6teG6oTFV4bq9MuG7rsOgVWEyWeG6o1VhMuG6s+G6oTFVMTPhu67huqFVLVXhur0yYjNVMTPhu67huqFV4bq9WDNVReG7ruG6uTPhurtV4bucRTJWZeG7ouG7llUxM1kzVeG6vTI0OzLhu5hVdzNd4bqhVeG6oeG7rmpV4bq9MmIzVTEz4buu4bqhVS5mYztVxKlWO1XDoSpl4buWVS424bqhMlXhuqExMjjhu65V4buLV1Uu4bqjVcOhZmLhuqExVeG6oTJiVeG7i1fhuqNVO1Y7VS7DouG6oTFVMsOiVeG6oTHDqmp74bqhVeG6vcOtVeG7iyrhuqFVMlfhuqEyVcOg4bql4bq9VTtWOzJV4buL4bqzVTvhu4HhuqExVeG6p+G6oVUuNuG6oTJV4bq74bqj4bqhMVXhurvhuqPhuqExVeG7i+G6qzNV4bq9MmIzVTEz4buu4bqhVeG6vTIze+G6oVXhu4vhu7LhuqHGoFV0M1vDqlUuw6NVOzLhuqNVZTIoZVU7MuG6v+G6oTFV4bq94buuVTsy4bu0O1U7MuG7tOG6oVXhurnhu7bhuqExVcOg4bqvM1XhuqExZmIzVeG6veG6uXvhuqFV4bq94bq5VjNVLiThur1VO8OjVTsyw6rhuqExVeG6vTLhu67huqExVeG6vTJiM1UxM+G7ruG6ocag4bueL2Xhu6Dhu55lVTvDoeG7ruG6u+G6u+G7jFRlceG6oyxqVOG7oOG6vDJiM1UxM+G7ruG6oVXigJzhuqAxw6pqe+G6oVXhur3DrVXDqcOq4bq1O1Xhur19VeG7nOG6vMOzeOG7ouKAnVUuZmM7VcSpIcOgVcOhV1U7MsOqJuG6oVXhur0yYjNVMTPhu67huqFVO8OjVS7huqVVOzI04bqhMlXEqVY7VTtpO1U74buu4bqjVSzhuqNV4buK4buy4bqhVWUyxIPhuqExVcOJw6rhurU7VeG6vX1V4buLW1Xhur3hurnhuq/huqExVcOhZmPhuqExVeG7i1dVLuG6o1XDoWZi4bqhMVUxMjNV4bqhMirhuqFV4buLV+G6o1XhuqHhu7LDoFXDmeG7rOG7qOG7qsagVeG6vDIh4bqjVS7Do+G7llU7VjtV4bqhMldVYTLhuqPhu65VMuG6rztVxKlWO1UuNuG6oTJVw5lVMTM9alXhur1m4bqp4bqhMVUuZuG6qeG6oTFV4buL4bqrM1Xhur0yYjNVw6FmY+G6oTFV4busxqDDmeG7rOG7pMag4buo4bumw5nGoOG7quG7qsOaVcOhJeG6oVUs4buu4bqjVS7huqXhuqExVTpnO1XEqVhVLjNd4bqhVeG6vWhVZTJW4bq9VeG6ueG7rlXhur1oVeG6oTHDqmp74bqhVeG6vcOtVXIh4bq7M8Oqw6BVw5nhu6bhu6bhu5ZVYTIzVeG6ocOjVeG6vTLhu65qVS7huqczVeG6veG6uVjhuqExVeG6vTJWM1UxM8Os4buuVeG7pFXDoGc7VeG6oeG7suG6oTFVw6FmY+G6oTFVO+G6qVU6WeG6ocag4bueL2Xhu6Dhu55lVTvDoeG7ruG6u+G6u+G7jFRlceG6oyxqVOG7oOG6suG6oTFVczPDoOG7ruG6uTvDqVU7MuG6o1Xhurnhu7bhuqExVeG6veG6uWbhuqs7VeG6oeG7ssOgVcOZ4bus4buq4buk4buWVeG7izNdO1VhMyLDoFXhur3hurnhu65V4bq9MmIzVTEz4buu4bqhVWUyWTNV4bqhMmJV4buLV+G6o1Xhur0yM3vhuqFV4buL4buy4bqhVTLhuq874buWVeG6vTIh4bqjVS7Do+G7llXhuqExZmIzVeG6veG7rlVlMlkzVcOpw6rhu67huqFV4bq7VuG6vVXhu4s2VeG6veG6uTRVw6DhuqXhur1V4bqhMeG6szNV4bq74buu4bqj4buWVcOA4bu44bq9VeG6veG6uWIzVTLhu65qVeG6vTIze+G6oVXhur0yIlXhuqFX4bqjVS7Do8agVXczXeG6oVXhuqHhu65q4buWVTtWO1XhuqEyV1VhMuG6o+G7rlUy4bqvO1U74buy4bqhVTtnVeG7i1fhuqNVOzI3VeG6u+G6tVU74buD4buuVS7DouG6oTFVMsOiVeG6oTHDqmp74bqhVeG6vcOtxqDhu54vZeG7oOG7nmVVO8Oh4buu4bq74bq74buMVGVx4bqjLGpU4bugdzNd4bqhVTvDo1Uy4bqp4bqhVeG7psWow5pVLsOi4bqhMVUyw6JV4bqhMcOqanvhuqFV4bq9w61VLmZjO1Uu4bu44bq9VeG6vVgzVWEy4bqjWeG6oTFVxq/DmlVlMsSD4bqhMVXhur0yNFXhuqExMjNdw6BV4bq94bq5e+G6oVXhur0yfVUxM+G6qzPGoFVFMiXhuqFVOzI04bqhMlU74buD4buuVS7DouG6oTFVMsOiVeG6oTHDqmp74bqhVeG6vcOtVcOhV1XDoOG6peG6vVXDoFZqVTvhuqXhuqExVTJmZOG6oTFV4buLM1XhurvDo+G6oTFV4buL4bqrM1Uu4bqlVTsyNOG6oTJVxKlWO1U7w6NVMTNWVeG6veG6uTZVYTLhuqNZ4bqhMVXDmcOaLcOZxajhu5ZV4bq9ZztVOzJ74bqhMlXDoV07MlU7MjdVYTLhuqNZ4bqhMVXDmVUxMz1qVeG6u+G7rsOqVeG7plXhur3hurkzXcOqVeG6oeG7ssOgxqDhu54vZeG7oOG6vDIh4bqjVeG6vDLhu67huqEyVeG6oTN74bqh4bueL2Xhu6A=