Is gravity greater at the international date line?

Answer 1

No. The international date line is a zig-zag line between the earth's poles. It has no particular

connection to the forces of gravity.

Gravity behaves exactly the same way at every point on earth. Wherever an object may be,

there are equal forces attracting it and the earth toward each other. The forces are proportional

to the product of the object's mass and the earth's mass, and inversely proportional to the square

of the distance between their centers. Since the earth's diameter at the equator is slightly larger than

its diameter through the poles, objects at the poles are slightly closer to the center of the earth, so

the mutual gravitational forces are slightly larger there.

Answer 2

No, gravity is consistent across the Earth's surface, including at the International Date Line. Gravity is primarily dependent on the mass of the Earth and the distance from its center.