Java readable time ago

getAgoString

public static String getAgoString(Date occurrence) {
    try {
        Date now = new Date();
        long duration = now.getTime() - occurrence.getTime();
        long minutes = TimeUnit.MILLISECONDS.toMinutes(duration);
        long hours = TimeUnit.MILLISECONDS.toHours(duration);
        long days = TimeUnit.MILLISECONDS.toDays(duration);
        if (days > 180) {
            return " billions and billions of years ago";
        }
        if (days > 0) {
            return (days == 1) ? days + " day ago" : days + " days ago";
        }
        if (hours > 0) {
            return (hours == 1) ? hours + " hour ago" : hours + " hours ago";
        }
        if (minutes > 0) {
            return (minutes == 1) ? minutes + " minute ago" : minutes + " minutes ago";
        }
    } catch (Exception e) {
        return "At some point in the past, presumably"; //TODO fieldtest accuracy of assertion
    }
    return "Just now";
}