export function parseSimTime(payload, fallbackFn) {
    if(payload?.t != null && typeof(payload.t) === 'number' && !Number.isNaN(payload.t)) return(payload.t)
    if(payload?.at != null && typeof(payload.at) === 'number' && !Number.isNaN(payload.at)) return(payload.at)
    return(fallbackFn())
}