| In this way in approximately 9.800 years, the Earth will pass in perihelion on June 21th at the time of the summer solstice. |
| With aching finality, the moon unseen reached its perihelion in the sky and the hour sounded the twelve chimes of middle night. |
| But it's not that simple either, because the dates of the perihelion and aphelion are also shifting. |
| Maximum gravitation force occurs when a syzygy and perigee occur on the same day as perihelion. |
| The radius vector is shortest when the planet is at perihelion and longest at aphelion. |
| The date of passage of the Earth in perihelion and that of passage in aphelion advance in our calendar. |
