# luan:Time.luan - `Time.now()`: milliseconds since the epoch. - `Time.format(time [, pattern [, time_zone]])`: formats milliseconds with a Java `SimpleDateFormat` pattern (default `"yyyy-MM-dd HH:mm:ss"`), in the server's default time zone unless a zone name like `"UTC"` is given. - `Time.period{days=, hours=, minutes=, seconds=, millis=}`: a duration in milliseconds, for delays and timeouts.