- java.util.GregorianCalendar
- Default today:
  - GregorianCalendar today = new GregorianCalendar();
- Set specific day:
  - GregorianCalendar day = new GregorianCalendar(<yyyy>, <m>, <d>);
  - Month counts from 0
- java.util.Calendar
  - GregorianCalendar superclass
  - Mnemonic constants
  - p. 199 table of constants
- GregorianCalendar getTime() instance method
  - Full date and time info
  - Like Date
  - Can be used for SimpleDateFormat
- SimpleDateFormat
  - Convert numerical week and month info to words
  - Only accepts Date objects