I am trying to access specific locations (time-zone) tv series, i have done something like this on the url but however even I change the time zone string to different place

I get te same response for Airing Today and On Air(TV) Api calls

interface FetchParams {
  pageParam: number;
  // NEW: Optional timezone parameter
  timezone?: "Europe/Istanbul"; // e.g., "Europe/London", "America/New_York"
}
const fetchTVSeries = async (
  endpoint: string,
  { pageParam, timezone }: FetchParams // Destructure timezone here
): Promise<TVShow[]> => {
  // Construct the base URL with language and page
  let url = `https://api.themoviedb.org/3/tv/${endpoint}?language=en-US&page=${pageParam}`;

  // NEW: Conditionally add timezone if provided
  if (timezone) {
    url += `&timezone=${encodeURIComponent(timezone)}`;
  }



export const fetchOnTheAirTVSeries = (params: FetchParams) =>
  fetchTVSeries("on_the_air", params);

export const fetchAiringTodayTVSeries = (params: FetchParams) =>
  fetchTVSeries("airing_today", params);

How can I find solution to this ?