9 files changed, 578 insertions, 4 deletions
diff --git a/test/data/ical-003.ical b/test/data/ical-003.ical
index 599d24f..5645705 100644
--- a/test/data/ical-003.ical
+++ b/test/data/ical-003.ical
@@ -22,4 +22,49 @@ EXDATE:20000215T000000
 EXDATE:20000223T000000
 SUMMARY:Recurring appointment
 END:VEVENT
+BEGIN:VEVENT
+DTSTART:20200526T120000
+DURATION:PT1H17M0S
+RRULE:FREQ=DAILY;UNTIL=20200529T130000
+SUMMARY: until May 29 2020\, 13:00
+END:VEVENT
+BEGIN:VEVENT
+DTSTART:20200526T120000
+DURATION:PT1H17M0S
+RRULE:FREQ=DAILY;UNTIL=20200529T110000
+SUMMARY: until May 29 2020\, 11:00
+END:VEVENT
+BEGIN:VEVENT
+DTSTART:20200531T214500
+DURATION:PT15M0S
+RRULE:FREQ=MONTHLY;COUNT=10
+EXDATE:20200731T214500,20210131T214500
+SUMMARY:monthly on 31th\, count 10\, exceptions 31/7/2020 and 31/1/2021
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;VALUE=DATE:20200502
+DTEND;VALUE=DATE:20200504
+DESCRIPTION:The first weekend in May is a two-day event.\nNon-repeating event.
+SUMMARY:First weekend in May
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;VALUE=DATE:20200502
+DTEND;VALUE=DATE:20200504
+DESCRIPTION:First weekend in May is a two-day event!\nRepeating event\, three years.
+SUMMARY:First weekend in May
+RRULE:FREQ=YEARLY;BYDAY=1SA;BYMONTH=5;COUNT=3
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART:20200502T000000
+DTEND:20200504T000000
+DESCRIPTION:First weekend in May is a two-day event!\nRepeating appointment.
+SUMMARY:First weekend in May
+RRULE:FREQ=YEARLY;BYDAY=1SA;BYMONTH=5;COUNT=3
+END:VEVENT
 END:VCALENDAR
diff --git a/test/data/ical-005.ical b/test/data/ical-005.ical
index 5f20f48..e417779 100644
--- a/test/data/ical-005.ical
+++ b/test/data/ical-005.ical
@@ -18,6 +18,6 @@ TRANSP:TRANSPARENT
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:On day 2
-DTSTART;VALUE=DATE:20131003
+DTSTART;VALUE=DATE:20131004
 END:VEVENT
 END:VCALENDAR
diff --git a/test/data/ical-007.ical b/test/data/ical-007.ical
index e46c3fb..a7dfdd5 100644
--- a/test/data/ical-007.ical
+++ b/test/data/ical-007.ical
@@ -10,4 +10,9 @@ SUMMARY:UTC
 DTSTART:20150223T110000Z
 DURATION:PT1H
 END:VEVENT
+BEGIN:VEVENT
+SUMMARY:CET
+DTSTART;TZID=CET:20150223T110000
+DURATION:PT1H
+END:VEVENT
 END:VCALENDAR
diff --git a/test/data/ical-008.ical b/test/data/ical-008.ical
index 51625d5..7789734 100644
--- a/test/data/ical-008.ical
+++ b/test/data/ical-008.ical
@@ -1,8 +1,8 @@
 BEGIN:VCALENDAR
 VERSION:2.0
 BEGIN:VEVENT
-DTSTART;TZID="(UTC+01:00) Amsterdam, Berlin, Bern, Rom, Stockholm, Wien":19800101T000100
-DURATION:P1DT9H17M0S
+DTSTART:19800101T000100
+DURATION;TESTPARAM="Quoted string with colon(:), semicolon(;) and comma(,)":P1DT9H17M0S
 SUMMARY:Calibrator's
 END:VEVENT
 BEGIN:VTODO
diff --git a/test/data/ical-009.ical b/test/data/ical-009.ical
index 73e9037..14bf4eb 100644
--- a/test/data/ical-009.ical
+++ b/test/data/ical-009.ical
@@ -1,9 +1,9 @@
 BEGIN:VCALENDAR
 VERSION:2.0
 BEGIN:VEVENT
-DTSTART:20200318T084100
 DURATION:PT1H30M0S
 SUMMARY:A simple appointment
+DTSTART:20200318T084100
 END:VEVENT
 BEGIN:VTODO
 PRIORITY:1
@@ -12,6 +12,10 @@ END:VTODO
 BEGIN:VEVENT
 DTSTART:
 DURATION:PT1H30M0S
+SUMMARY:invalid start time
+END:VEVENT
+BEGIN:VEVENT
+DURATION:PT1H30M0S
 SUMMARY:missing start time
 END:VEVENT
 BEGIN:VEVENT
@@ -39,6 +43,12 @@ END:VEVENT
 BEGIN:VEVENT
 DTSTART:20200318T084100
 DURATION:PT1H30M0S
+EXDATE:20200324T084100
+SUMMARY:exdate\, missing rrule
+END:VEVENT
+BEGIN:VEVENT
+DTSTART:20200318T084100
+DURATION:PT1H30M0S
 SUMMARY:Summary with more than\none line
 END:VEVENT
 BEGIN:VEVENT
@@ -63,6 +73,59 @@ BEGIN:VTODO
 PRIORITY:1
 SUMMARY:an unescaped comma: ,
 END:VTODO
+BEGIN:VEVENT
+DTSTART:20200406T221300
+DURATION:PT0H15M0S
+SUMMARY:LOCATION twice
+LOCATION:first
+LOCATION:second
+END:VEVENT
+BEGIN:VEVENT
+DTSTART;VALUE=DATE:20200406
+DURATION:PT0H15M0S
+SUMMARY:Invalid duration (must be days or weeks)
+END:VEVENT
+BEGIN:VEVENT
+DTSTART:20200406
+DURATION:P1D
+SUMMARY:Invalid DTSTART value type
+END:VEVENT
+BEGIN:VEVENT
+DTSTART;VALUE=DATE:20200406
+SUMMARY:Invalid DTEND value type
+DTEND:20200407
+END:VEVENT
+BEGIN:VEVENT
+DTSTART;VALUE=DATE:20200406
+DURATION:P1D
+RRULE:FREQ=MONTHLY;UNTIL=20201030T120000Z
+SUMMARY:Invalid UNTIL value
+END:VEVENT
+BEGIN:VEVENT
+DTSTART;VALUE=DATE:20200406
+DURATION:P1D
+RRULE:FREQ=MONTHLY;UNTIL=20201030
+EXDATE:20200606
+SUMMARY:Invalid EXDATE value type
+END:VEVENT
+BEGIN:VEVENT
+DTSTART;VALUE=DATE:20200406
+DURATION:P1D
+RRULE:FREQ=MONTHLY;UNTIL=20201030
+EXDATE;VALUE=DATE:20200606T120000Z
+SUMMARY:Invalid EXDATE value
+END:VEVENT
+BEGIN:VEVENT
+DTSTART:20200527T163000
+DTEND:20200528T163000
+DURATION:P1D
+SUMMARY:Both end time and duration
+END:VEVENT
+BEGIN:VEVENT
+DTSTART:20200527T163000
+DTEND:20200526T163000
+SUMMARY:End time before start
+END:VEVENT
 BEGIN:VTODO
 SUMMARY:finally\, missing end of item
 END:VCALENDAR
diff --git a/test/data/ical-012.ical b/test/data/ical-012.ical
new file mode 100644
index 0000000..05604af
--- /dev/null
+++ b/test/data/ical-012.ical
@@ -0,0 +1,89 @@
+BEGIN:VCALENDAR
+VERSION:2.0
+
+BEGIN:VEVENT
+DTSTART:20200404T204500
+DURATION:PT1H30M0S
+SUMMARY:event with one-line description
+DESCRIPTION:event with one-line description
+END:VEVENT
+
+BEGIN:VEVENT
+DTSTART:20200404T204500
+DURATION:PT1H30M0S
+SUMMARY:description and location
+DESCRIPTION:event with description\nand location
+LOCATION: Right here
+END:VEVENT
+
+BEGIN:VEVENT
+DTSTART:20200404T084100
+DURATION:PT1H30M0S
+SUMMARY:no description\, but comment
+COMMENT:Event without description: a comment\nstreching over\nthree lines
+END:VEVENT
+
+BEGIN:VEVENT
+DTSTART:20200404T084100
+DURATION:PT1H30M0S
+SUMMARY:Empty description
+DESCRIPTION:
+END:VEVENT
+
+BEGIN:VEVENT
+DTSTART:20200404T084100
+DURATION:PT1H30M0S
+SUMMARY:Empty description\, but comment
+DESCRIPTION:
+COMMENT:event with empty description
+END:VEVENT
+
+BEGIN:VEVENT
+DTSTART:20200404T204500
+DURATION:PT1H30M0S
+SUMMARY:description\, comment and location
+DESCRIPTION:event with\ndescription\ncomment\nand location
+LOCATION: Right here
+COMMENT:just a repetition of description:\nevent with\ndescription\ncomment\nand location
+END:VEVENT
+
+BEGIN:VTODO
+PRIORITY:2
+SUMMARY:todo with one-line description
+DESCRIPTION:todo with one-line description
+END:VTODO
+
+BEGIN:VTODO
+PRIORITY:3
+SUMMARY:description and location
+DESCRIPTION:todo with description\nand location
+LOCATION: Right here
+END:VTODO
+
+BEGIN:VTODO
+PRIORITY:4
+SUMMARY:no description\, but comment
+COMMENT:Todo without description. A comment\nstreching over\nthree lines
+END:VTODO
+
+BEGIN:VTODO
+PRIORITY:5
+SUMMARY:Empty description
+DESCRIPTION:
+END:VTODO
+
+BEGIN:VTODO
+PRIORITY:6
+SUMMARY:Empty description
+DESCRIPTION:
+END:VTODO
+
+BEGIN:VTODO
+SUMMARY:todo with description\, comment and location
+DESCRIPTION:todo with\ndescription\ncomment\nand location\,\nbut no priority
+LOCATION: Right here
+COMMENT:mostly a repetition of description:\ntodo with\ndescription\ncomment\nand location
+STATUS:COMPLETED
+END:VTODO
+
+END:VCALENDAR
diff --git a/test/data/ical-014.ical b/test/data/ical-014.ical
new file mode 100644
index 0000000..19076bc
--- /dev/null
+++ b/test/data/ical-014.ical
@@ -0,0 +1,106 @@
+BEGIN:VCALENDAR
+VERSION:2.0
+
+BEGIN:VEVENT
+DTSTART:20200404T204500
+DURATION:PT1H30M0S
+SUMMARY:event with one-line description
+DESCRIPTION:event with one-line description
+END:VEVENT
+
+BEGIN:VEVENT
+DTSTART:20200404T204500
+DURATION:PT1H30M0S
+SUMMARY:description and location
+DESCRIPTION:event with description\nand location
+LOCATION:Right here
+END:VEVENT
+
+BEGIN:VEVENT
+DTSTART:20200404T084100
+DURATION:PT1H30M0S
+SUMMARY:no description\, but comment
+COMMENT:Event without description: a comment\nstreching over\nthree lines
+END:VEVENT
+
+BEGIN:VEVENT
+DTSTART:20200404T084100
+DURATION:PT1H30M0S
+SUMMARY:Empty description
+DESCRIPTION:
+END:VEVENT
+
+BEGIN:VEVENT
+DTSTART:20200404T084100
+DURATION:PT1H30M0S
+SUMMARY:Empty description\, but comment
+DESCRIPTION:
+COMMENT:event with empty description
+END:VEVENT
+
+BEGIN:VEVENT
+DTSTART:20200404T204500
+DURATION:PT1H30M0S
+SUMMARY:description\, comment and location
+DESCRIPTION:event with\ndescription\ncomment\nand location
+LOCATION:Right here
+COMMENT:just a repetition of description:\nevent with\ndescription\ncomment\nand location
+END:VEVENT
+
+BEGIN:VTODO
+PRIORITY:2
+SUMMARY:todo with one-line description
+DESCRIPTION:todo with one-line description
+END:VTODO
+
+BEGIN:VTODO
+PRIORITY:3
+SUMMARY:description and location
+DESCRIPTION:todo with description\nand location
+LOCATION:Right here
+END:VTODO
+
+BEGIN:VTODO
+PRIORITY:4
+SUMMARY:no description\, but comment
+COMMENT:Todo without description. A comment\nstreching over\nthree lines
+END:VTODO
+
+BEGIN:VTODO
+PRIORITY:5
+SUMMARY:Empty description
+DESCRIPTION:
+END:VTODO
+
+BEGIN:VTODO
+PRIORITY:6
+SUMMARY:Empty description
+DESCRIPTION:
+END:VTODO
+
+BEGIN:VTODO
+SUMMARY:todo with description\, comment and location
+DESCRIPTION:todo with\ndescription\ncomment\nand location\,\nbut no priority
+LOCATION:Right here
+COMMENT:mostly a repetition of description:\ntodo with\ndescription\ncomment\nand location
+STATUS:COMPLETED
+END:VTODO
+
+BEGIN:VEVENT
+SUMMARY:Five days
+DESCRIPTION:A five-day event turned into a recurring one-day event
+COMMENT:Note file has Comment: and Import:
+DTSTART;VALUE=DATE:20200819
+DTEND;VALUE=DATE:20200824
+END:VEVENT
+
+BEGIN:VEVENT
+SUMMARY:CET
+DESCRIPTION:Date with local time and time zone reference
+LOCATION:Central Europe
+COMMENT:\nCET\n\n
+DTSTART;TZID=CET:20150223T110000
+DURATION:PT1H
+END:VEVENT
+
+END:VCALENDAR
diff --git a/test/data/rfc5545 b/test/data/rfc5545
new file mode 100644
index 0000000..d9863ce
--- /dev/null
+++ b/test/data/rfc5545
@@ -0,0 +1,28 @@
+01/05/1997 @ 08:30 -> 01/05/1997 @ 08:30 {2Y w0 m1} |page 45: every sunday in January at 8:30 AM, every other year (FREQ=YEARLY;INTERVAL=2;BYMONTH=1;BYDAY=SU)
+01/01/1998 @ 09:00 -> 01/01/1998 @ 09:00 {1Y -> 01/31/2000 w0 w1 w2 w3 w4 w5 w6 m1} |page 124(1): Every day in January for three years (FREQ=YEARLY;UNTIL=20000131T140000Z;BYMONTH=1;BYDAY=SU,MO,TU,WE,TH,FR,SA)
+01/01/1998 @ 09:00 -> 01/01/1998 @ 09:00 {1D -> 01/31/2000 m1} |page 124(2): Every day in January for three years (FREQ=DAILY;UNTIL=20000131T140000Z;BYMONTH=1)
+09/02/1997 @ 09:00 -> 09/02/1997 @ 09:00 {1W -> 10/02/1997 w2 w4} |page 125(1): Weekly on Tuesday and Thursday for five weeks (FREQ=WEEKLY;UNTIL=19971002T000000Z;BYDAY=TU,TH)
+09/01/1997 @ 09:00 -> 09/01/1997 @ 09:00 {2W -> 12/24/1997 w1 w3 w5} |page 125: Every other week on Monday, Wednesday, and Friday until December 24, 1997, starting on Monday, September 1, 1997 (FREQ=WEEKLY;INTERVAL=2;UNTIL=19971224T000000Z;BYDAY=MO,WE,FR)
+09/05/1997 @ 09:00 -> 09/05/1997 @ 09:00 {1M -> 06/05/1998 w12} |page 126: Monthly on the first Friday for 10 occurrences (FREQ=MONTHLY;COUNT=10;BYDAY=1FR)
+09/07/1997 @ 09:00 -> 09/07/1997 @ 09:00 {2M -> 05/31/1998 w7 w-7} |page 126: Every other month on the first and last Sunday of the month for 10 occurrences (RRULE:FREQ=MONTHLY;INTERVAL=2;COUNT=10;BYDAY=1SU,-1SU)
+09/22/1997 @ 09:00 -> 09/22/1997 @ 09:00 {1M -> 02/28/1998 w-15} |page 126: Monthly on the second-to-last Monday of the month for 6 months (RRULE:FREQ=MONTHLY;COUNT=6;BYDAY=-2MO)
+09/28/1997 [1] {1M d-3} page 127: Monthly on the third-to-last day of the month, forever (RRULE:FREQ=MONTHLY;BYMONTHDAY=-3)
+09/02/1997 @ 09:00 -> 09/02/1997 @ 09:00 {1M -> 02/01/1998 d2 d15} |Page 127: Monthly on the 2nd and 15th of month for 10 occurrences (RRULE:FREQ=MONTHLY;COUNT=10;BYMONTHDAY=2,15)
+09/30/1997 @ 09:00 -> 09/30/1997 @ 09:00 {1M -> 02/01/1998 d1 d-1} |page 127: Monthly on the first and last day of the month for 10 occurrences (RRULE:FREQ=MONTHLY;COUNT=10;BYMONTHDAY=1,-1)
+09/10/1997 @ 09:00 -> 09/10/1997 @ 09:00 {18M -> 03/13/1999 d10 d11 d12 d13 d14 d15} |page 127: Every 18 months on the 10th thru 15th of the month for 10 occurrences (RRULE:FREQ=MONTHLY;INTERVAL=18;COUNT=10;BYMONTHDAY=10,11,12,13,14,15)
+09/02/1997 @ 09:00 -> 09/02/1997 @ 09:00 {2M w2} |page 127: Every Tuesday, every other month (RRULE:FREQ=MONTHLY;INTERVAL=2;BYDAY=TU)
+06/10/1997 @ 09:00 -> 06/10/1997 @ 09:00 {1Y -> 07/10/2001 m6 m7} |page 128: Yearly in June and July for 10 occurrences (RRULE:FREQ=YEARLY;COUNT=10;BYMONTH=6,7)
+03/10/1997 @ 09:00 -> 03/10/1997 @ 09:00 {2Y -> 03/10/2003 m1 m2 m3} |page 128: Every other year in January, February and March for 10 occurrences (RRULE:FREQ=YEARLY;INTERVAL=2;COUNT=10;BYMONTH=1,2,3)
+05/19/1997 [1] {1Y w141} page 128: Every 20th Monday of the year, forever (RRULE:FREQ=YEARLY;BYDAY=20MO)
+03/13/1997 @ 09:00 -> 03/13/1997 @ 09:00 {1Y w4 m3} |page 129: Every Thursday in March, forever (RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=TH)
+06/05/1997 @ 09:00 -> 06/05/1997 @ 09:00 {1Y w4 m6 m7 m8} |page 129: Every Thursday, but only during June, July and August, forever (RRULE:FREQ=YEARLY;BYDAY=TH;BYMONTH=6,7,8)
+02/13/1998 [1] {1M d13 w5} page 129: Every Friday the 13th, forever (RRULE:FREQ=MONTHLY;BYDAY=FR;BYMONTHDAY=13)
+09/13/1997 [1] {1M d7 d8 d9 d10 d11 d12 d13 w6} page 130: The first Saturday that follows the first Sunday of the month, forever (RRULE:FREQ=MONTHLY;BYDAY=SA;BYMONTHDAY=7,8,9,10,11,12,13)
+11/05/1996 [1] {4Y d2 d3 d4 d5 d6 d7 d8 w2 m11} page 130: Every 4 years, the first Tuesday after a Monday in November, forever (U.S. Presidential Election day) (RRULE:FREQ=YEARLY;INTERVAL=4;BYMONTH=11;BYDAY=TU;BYMONTHDAY=2,3,4,5,6,7,8)
+08/05/1997 @ 09:00 -> 08/05/1997 @ 09:00 {2W -> 08/31/1997 w0 w2} |page 131: An example where the days generated makes a difference because of weekstart (RRULE:FREQ=WEEKLY;INTERVAL=2;COUNT=4;BYDAY=TU,SU)
+01/15/2007 [1] {1M -> 03/30/2007 d15 d30} page 132: An example where an invalid date (i.e.  February 30) is ignored (RRULE:FREQ=MONTHLY;BYMONTHDAY=15,30;COUNT=5)
+03/30/1997 @ 09:00 -> 03/30/1997 @ 09:00 {1Y w-7 m3} |Last Sunday in March, forever (RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU)
+12/25/1997 [1] {3Y w-11} Last Thursday of the year every third year, forever (FREQ=YEARLY;INTERVAL=3;BYDAY=-1TH)
+06/22/1997 [1] {2Y w0 w1} Every Sunday and Monday, every other year (FREQ=YEARLY;INTERVAL=2;BYDAY=SU,MO)
+02/01/1997 [1] {1Y -> 01/31/2005 d1 d29 m2} Every year on February 1 and 29 for eight years (RRULE:FREQ=YEARLY;UNTIL=20050131T000000Z;BYMONTH=2;BYMONTHDAY=1,29)
+08/01/2020 @ 08:41 -> 08/01/2020 @ 10:11 {1M w-41} |negative ordered weekday may not exist
diff --git a/test/data/rfc5545.ical b/test/data/rfc5545.ical
new file mode 100644
index 0000000..3f51388
--- /dev/null
+++ b/test/data/rfc5545.ical
@@ -0,0 +1,238 @@
+BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970901T090000
+SUMMARY:Every other week on Monday\, Wednesday\, and Friday until December 24\, 1997\, starting on Monday\, September 1\, 1997
+RRULE:FREQ=WEEKLY;INTERVAL=2;UNTIL=19971224T000000Z;WKST=SU;BYDAY=MO,WE,FR
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970902T090000
+SUMMARY:Every other week on Tuesday and Thursday\, for 8 occurrences
+RRULE:FREQ=WEEKLY;INTERVAL=2;COUNT=8;WKST=SU;BYDAY=TU,TH
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970905T090000
+SUMMARY:Monthly on the first Friday for 10 occurrences
+RRULE:FREQ=MONTHLY;COUNT=10;BYDAY=1FR
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970905T090000
+SUMMARY:Monthly on the first Friday until December 24\, 1997
+RRULE:FREQ=MONTHLY;UNTIL=19971224T000000Z;BYDAY=1FR
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970907T090000
+SUMMARY:Every other month on the first and last Sunday of the month for 10 occurrences
+RRULE:FREQ=MONTHLY;INTERVAL=2;COUNT=10;BYDAY=1SU,-1SU
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970922T090000
+SUMMARY:Monthly on the second-to-last Monday of the month for 6 months
+RRULE:FREQ=MONTHLY;COUNT=6;BYDAY=-2MO
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970928T090000
+SUMMARY:Monthly on the third-to-the-last day of the month\, forever
+RRULE:FREQ=MONTHLY;BYMONTHDAY=-3
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970902T090000
+SUMMARY:Monthly on the 2nd and 15th of the month for 10 occurrences
+RRULE:FREQ=MONTHLY;COUNT=10;BYMONTHDAY=2,15
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970930T090000
+SUMMARY:Monthly on the first and last day of the month for 10 occurrences
+RRULE:FREQ=MONTHLY;COUNT=10;BYMONTHDAY=1,-1
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970910T090000
+SUMMARY:Every 18 months on the 10th thru 15th of the month for 10 occurrences
+RRULE:FREQ=MONTHLY;INTERVAL=18;COUNT=10;BYMONTHDAY=10,11,12,13,14,15
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970902T090000
+DURATION:PT1H
+SUMMARY:Daily for 10 occurrences
+RRULE:FREQ=DAILY;COUNT=10
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970902T090000
+SUMMARY:Every Tuesday\, every other month
+RRULE:FREQ=MONTHLY;INTERVAL=2;BYDAY=TU
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970610T090000
+SUMMARY:Yearly in June and July for 10 occurrences
+RRULE:FREQ=YEARLY;COUNT=10;BYMONTH=6,7
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970310T090000
+SUMMARY:Every other year on January\, February\, and March for 10 occurrences
+RRULE:FREQ=YEARLY;INTERVAL=2;COUNT=10;BYMONTH=1,2,3
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970519T090000
+SUMMARY:Every 20th Monday of the year\, forever
+RRULE:FREQ=YEARLY;BYDAY=20MO
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970313T090000
+SUMMARY:Every Thursday in March\, forever
+RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=TH
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970605T090000
+SUMMARY:Every Thursday\, but only during June\, July\, and August\, forever
+RRULE:FREQ=YEARLY;BYDAY=TH;BYMONTH=6,7,8
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19980213T090000
+SUMMARY:Every Friday the 13th\, forever
+RRULE:FREQ=MONTHLY;BYDAY=FR;BYMONTHDAY=13
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970913T090000
+SUMMARY:The first Saturday that follows the first Sunday of the month\, forever
+RRULE:FREQ=MONTHLY;BYDAY=SA;BYMONTHDAY=7,8,9,10,11,12,13
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19961105T090000
+SUMMARY:Every 4 years\, the first Tuesday after a Monday in November\, forever (U.S. Presidential Election day)
+RRULE:FREQ=YEARLY;INTERVAL=4;BYMONTH=11;BYDAY=TU;BYMONTHDAY=2,3,4,5,6,7,8
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970805T090000
+SUMMARY:An example where the days generated makes a difference because of WKST
+RRULE:FREQ=WEEKLY;INTERVAL=2;COUNT=4;BYDAY=TU,SU;WKST=MO
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970805T090000
+SUMMARY:changing only WKST from MO to SU\, yields different results...
+RRULE:FREQ=WEEKLY;INTERVAL=2;COUNT=4;BYDAY=TU,SU;WKST=SU
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970902T090000
+DURATION:PT30M
+SUMMARY:Daily until December 24\, 1997
+RRULE:FREQ=DAILY;UNTIL=19971224T000000Z
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:20070115T090000
+SUMMARY:An example where an invalid date (i.e.\, February 30) is ignored
+RRULE:FREQ=MONTHLY;BYMONTHDAY=15,30;COUNT=5
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970902T090000
+DURATION:PT5M
+SUMMARY:Every other day - forever
+RRULE:FREQ=DAILY;INTERVAL=2
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970902T090000
+SUMMARY:Every 10 days\, 5 occurrences:
+RRULE:FREQ=DAILY;INTERVAL=10;COUNT=5
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19980101T090000
+SUMMARY:(1) Every day in January\, for 3 years:
+RRULE:FREQ=YEARLY;UNTIL=20000131T140000Z;BYMONTH=1;BYDAY=SU,MO,TU,WE,TH,FR,SA
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19980101T090000
+SUMMARY:(2) Every day in January\, for 3 years:
+RRULE:FREQ=DAILY;UNTIL=20000131T140000Z;BYMONTH=1
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970902T090000
+SUMMARY:Weekly for 10 occurrences
+RRULE:FREQ=WEEKLY;COUNT=10
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970902T090000
+SUMMARY:Weekly until December 24\, 1997
+RRULE:FREQ=WEEKLY;UNTIL=19971224T000000Z
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970902T090000
+SUMMARY:Every other week - forever
+RRULE:FREQ=WEEKLY;INTERVAL=2;WKST=SU
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970902T090000
+SUMMARY:Weekly on Tuesday and Thursday for five weeks (UNTIL)
+RRULE:FREQ=WEEKLY;UNTIL=19971007T000000Z;WKST=SU;BYDAY=TU,TH
+END:VEVENT
+BEGIN:VEVENT
+DTSTAMP:
+UID:
+DTSTART;TZID=America/New_York:19970902T090000
+SUMMARY:Weekly on Tuesday and Thursday for five weeks (COUNT)
+RRULE:FREQ=WEEKLY;COUNT=10;WKST=SU;BYDAY=TU,TH
+END:VEVENT
+END:VCALENDAR