title: Can I get a list of Time Zones prior to API 24 in Android
body: <p>I'm building a Time Zone converter app and want to get a list of all the time zones available so that I can present these in a recycler view and allow the user to choose from the time zone they want.  I then want to show the user the UTC time and the current and selected time zones.<br>
  The android.icu.util.TimeZone looks like it would work, but this is only introduced in API 24 and the old Time method is deprecated.
  I've also looked at the Calendar and GregorianCalendar methods, but all are API 24 and above.
  Any suggestions?  Thanks!</p>