export default function formatTime(d: string | Date | null | undefined): string {
  if (!d) return "Heure inconnue";

  const date = d instanceof Date ? d : new Date(d);
  if (isNaN(date.getTime())) return "Heure invalide";

  const hh = String(date.getUTCHours()).padStart(2, "0");
  const min = String(date.getUTCMinutes()).padStart(2, "0");

  return `${hh}:${min}`;
}