slumberdb/slumberdb-service-model/src/main/java/org/boon/slumberdb/stores/log/AsyncFileWriterDataStore.java
@Override
    public void tick(long time) {
        this.time.set(time);
         /*Foreign thread    every 20 or so mili-seconds so we don't spend too
         much time figuring out utc time. */
        approxTime.set(Dates.utcNow());
    }
@Override
    public void tick(long time) {
        this.time.set(time);
         /*Foreign thread    every 20 or so mili-seconds so we don't spend too
         much time figuring out utc time. */
        approxTime.set(Dates.utcNow());
    }
Calculate utc time. This gets called every 20 mili-seconds or so.