kotlin val currentTimeZone = TimeZone.currentSystemDefault() kotlin val dateTime = DateTime.now() val newDateTime = dateTime.toTimeZone(OffsetDateTime.now(), timeZone) kotlin val dateTime = DateTime.now() val newTimeZone = TimeZone.getTimeZone("America/New_York") val newDateTime = dateTime.changeTimeZone(newTimeZone) kotlin val date1 = Date(2022, Month.JANUARY, 1) val date2 = Date(2022, Month.JANUARY, 10) val days = date2 - date1 kotlin val time1 = Time(10, 30) val time2 = Time(15, 45) val hours = time2 - time1 kotlin val dateTime1 = DateTime(2022, Month.JANUARY, 1, 10, 0) val dateTime2 = DateTime(2022, Month.JANUARY, 1, 11, 30) val minutes = dateTime2 - dateTime1 kotlin val dateTime = DateTime.now() val formattedDateTime = dateTime.format("yyyy-MM-dd HH:mm:ss") kotlin val dateTime = DateTime.now() val locale = Locale.getDefault() val formattedDateTime = dateTime.format(locale) kotlin val formattedDateTime = "2022-01-01 10:30:00" val dateTime = formattedDateTime.parseDateTime("yyyy-MM-dd HH:mm:ss")