how can a geosynchronous satellite appear to remain stationery over Singapore but not San Francisco?

Question

WHY?? Is it to do with the equator line or its path?

Answer 1

Relative as in space equal mass. The sort of job that a
space vehicle might be doing is interwoven in such a way to
keep two outstanding events on standby. One is atomic
weight equals displaced material burnt. Another is speed is
weight like momentums and the eye cannot focus at the
unknown quantity as measured by the mathematical memory.
This variable therefore is diametric conclusive, and the proper
use of the satellite makes it viable, visit solid, and visible.

Answer 2

San Francisco is nearly 39degrees N whereas Singapore is only about 1 degree north.

Answer 3

Because it's programmed to remain stationery over Singapore, not SF.