timePeriods: {
    day: "Days";
    hour: "Hours";
    inst: "Instantaneous";
    minute: "Minutes";
    month: "Months";
    perm: "Permanent";
    round: "Rounds";
    seeText: "See Text";
    spec: "Special";
    turn: "Turn";
    year: "Years";
} = ...

This Object defines the various lengths of time which can occur in PF1