Does the summer solstice always occur on the same day?

<p style=";text-align:left;direction:ltr">Arabia Weather - The timing of the summer solstice in the Northern Hemisphere each year depends on the time when the sun reaches the northernmost point of the equator. Therefore, the date of the summer solstice in the Northern Hemisphere ranges from June 20 to 22, and this change occurs due to several effects, which are:</p><ul style=";text-align:left;direction:ltr"><li style=";text-align:left;direction:ltr"> The gravitational influence of the Moon and other planets.</li><li style=";text-align:left;direction:ltr"> The slight fluctuation in the Earth&#39;s rotation.</li><li style=";text-align:left;direction:ltr"> The difference between the Gregorian calendar system (which is usually 365 days), and the solar year (how long it takes the Earth to complete one revolution around the sun), which is about 365.242199 days long. To compensate for the missing portion of days, the Gregorian calendar adds a leap day approximately every 4 years.</li></ul>