Equatorial Guinea does not touch the equator anywhere
Equatorial Guinea, whatever its name suggests, never actually touches the equator. The line itself is not fixed either: Earth's spin axis wanders about 9 metres a year, dragging the true equator with it. And because the planet bulges, day and night on the equator are never quite equal.
The equator is the circle of 0° latitude splitting Earth into northern and southern halves, sitting midway between the poles and measuring roughly 40,075 km around. It is the only line of latitude that is also a great circle, passing through the planet's centre, and projecting its plane into the sky defines the celestial equator. Its name comes from medieval Latin aequator, part of a phrase meaning the circle that equalises day and night.
Life on the line has distinctive rhythms. At noon the Sun is never more than about 23° from straight overhead, so daytime temperatures barely vary through the year. Sunrises and sunsets are the fastest anywhere because the Sun climbs nearly vertically, yet daylight still runs about 14 minutes longer than darkness, thanks to atmospheric bending of light and the convention that the day begins when the Sun's upper edge appears. Sunlight is strongest at the March and September equinoxes, when the Sun passes directly overhead, and weakest at both solstices.
Earth is slightly squashed. Its equatorial diameter is about 43 km greater than its polar one, the equator is 0.16% longer than a meridian, and geodetic standards such as WGS 84, used by GPS, set the equatorial radius at 6,378.137 km. That difference explains why the nautical mile of 1,852 m is more than 3 m shorter than the geographical mile, one arc-minute of the equator. Surface spin reaches 460 m per second here, which is why spaceports like Kourou in French Guiana sit nearby: eastward launches get a free boost. Geological deposits show the equator's position shifted substantially between 48 and 12 million years ago.
About 21.7% of the line, some 8,714 km, crosses land, passing through eleven sovereign states, with Indonesia straddling the greatest length. It also runs through the territorial waters of the Maldives, Kiribati and the United States. Equatorial Guinea's island of Annobón lies 155 km south of it and the rest of the country to the north, Peru's northernmost point stops about 4.3 km short, and all of Nauru sits between 55 and 62 km south.
Source: Equator
