Your Time Zone Is Not an Apology
Candidates apologise for being in West Africa. Handled properly, WAT is one of the few structural advantages you have over a candidate in California.
Somewhere in most interviews with an African candidate, there is a small apologetic moment. "I know I am in a different time zone, but I am flexible." It is meant to reassure. It does the opposite, because it names a problem and then offers no answer.
Handle it as arithmetic instead.
The number they actually want
A hiring manager has one question: how many hours a day can we talk if we need to? Answer it before they ask, as a figure.
From WAT you have roughly six hours of overlap with a UK team, four to five with US Eastern, and two to three with US Pacific. Against a team in Berlin you are effectively in the same working day. Say the number for their location: "You are Eastern, so we share about five hours every afternoon — I take calls between 2 and 7 in my evening."
That sentence has replaced an apology with a schedule.
Where it is a genuine advantage
For a US company, a person in WAT starts the working day several hours before the American team does. That is not a compromise, it is coverage. Support queues that would otherwise sit untouched until 9am Eastern get worked. A build that fails overnight gets picked up. A document needed for a 10am meeting can be finished before anyone opens a laptop.
The candidate in California cannot offer that at any price. You can, at no extra cost to yourself, because it is simply your morning.
Put it in writing, in three places
In your contact line, as a fact: Abuja, Nigeria | UTC+1. Directly under your name, above your email — this is point one of our ten-point CV rubric, and it is the one candidates most often leave out.
In your summary, as a claim about overlap rather than about location. In your LinkedIn headline, if the roles you want are concentrated in one region.
The one thing not to do
Do not promise to work American hours. People do it in interviews out of eagerness and it goes wrong in month four, because a life reorganised around somebody else's afternoon is not sustainable and quitting looks worse than never starting. Offer real overlap, offer occasional late calls, and be honest about the boundary. Employers who have hired across time zones before will respect the answer. The ones who will not are the ones who were going to burn you out anyway.
This is your Aim point as much as anything else: knowing which companies your geography actually suits, and saying so in a number.