# eml source code:


BEGIN:VCALENDAR\r\n' +
  'METHOD:REQUEST\r\n' +
  'PRODID:Microsoft Exchange Server 2010\r\n' +
  'VERSION:2.0\r\n' +
  'BEGIN:VTIMEZONE\r\n' +
  'TZID:Eastern Standard Time\r\n' +
  'BEGIN:STANDARD\r\n' +
  'DTSTART:16010101T020000\r\n' +
  'TZOFFSETFROM:-0400\r\n' +
  'TZOFFSETTO:-0500\r\n' +
  'RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=1SU;BYMONTH=11\r\n' +
  'END:STANDARD\r\n' +
  'BEGIN:DAYLIGHT\r\n' +
  'DTSTART:16010101T020000\r\n' +
  'TZOFFSETFROM:-0500\r\n' +
  'TZOFFSETTO:-0400\r\n' +
  'RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=2SU;BYMONTH=3\r\n' +
  'END:DAYLIGHT\r\n' +
  'END:VTIMEZONE\r\n' +
  'BEGIN:VEVENT\r\n' +

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正确的应该是