Altering schedule docs

docs/schedules.md

@@ -18,10 +18,11 @@ an `HTTP POST` to a variety of API endpoints:
     }
 
 ...where `rrule` is a valid
-[RFC5545](https://www.rfc-editor.org/rfc/rfc5545.txt) RRULE string.  The
-specific example above would run a job every day - for seven consecutive days - starting
+[RFC5545](https://www.rfc-editor.org/rfc/rfc5545.txt) RRULE string and within AWX [RRULE Limitations](#rrule-limitations).
+The specific example above would run a job every day - for seven consecutive days - starting
 on January 15th, 2030 at noon (UTC).
 
+For more examples see [RRULE Examples](#rrule-examples).
 
 ## Specifying Timezones
 
@@ -111,16 +112,16 @@ local and UTC time:
 
 The following aspects of `RFC5545` are _not_ supported by AWX schedules:
 
+* The RRULE must start with the `DTSTART` attribute
 * Strings with more than a single `DTSTART:` component
-* Strings with more than a single `RRULE` component
-* The use of `FREQ=SECONDLY` in an `RRULE`
-* The use of more than a single `FREQ=BYMONTHDAY` component in an `RRULE`
-* The use of more than a single `FREQ=BYMONTHS` component in an `RRULE`
-* The use of `FREQ=BYYEARDAY` in an `RRULE`
-* The use of `FREQ=BYWEEKNO` in an `RRULE`
-* The use of `FREQ=BYWEEKNO` in an `RRULE`
-* The use of `COUNT=` in an `RRULE` with a value over 999
-
+* At least one RRULE must be in the string
+* The use of `RDATE` or `EXDATE`
+* For any of the rules in the rrule:
+    * Interval must be included
+    * The use of `FREQ=SECONDLY` in an `RRULE`
+    * The usage of a `BYDAY` with a prefixed number
+    * The usage of both `COUNT` and `UNTIL` in the same RRULE
+    * The use of `COUNT=` in an `RRULE` with a value over 999
 
 ## Implementation Details
 
@@ -141,3 +142,24 @@ database for Schedules where `Schedule.next_run` is between
 `scheduler_last_runtime()` and `utcnow()`.  For each of these, a new job is
 launched, and `Schedule.next_run` is changed to the next chronological datetime
 in the list of all occurences.
+
+
+## Complex RRULE Examples
+
+Every day except for April 30th:
+
+    DTSTART;TZID=US/Eastern:20230428T170000 RRULE:INTERVAL=1;FREQ=DAILY EXRULE:INTERVAL=1;FREQ=DAILY;BYMONTH=4;BYMONTHDAY=30
+
+Every 5 minutes but not on Mondays from 5-7pm:
+
+    DTSTART;TZID=America/New_York:20220418T164500 RRULE:INTERVAL=5;FREQ=MINUTELY EXRULE:FREQ=MINUTELY;INTERVAL=5;BYDAY=MO;BYHOUR=17,18
+
+Every 15 minutes Monday to Friday from 10:01am to 6:02pm (inclusive):
+
+    DTSTART;TZID=America/New_York:20220417T100100 RRULE:INTERVAL=15;FREQ=MINUTELY;BYDAY=MO,TU,WE,TH,FR;BYHOUR=10,11,12,13,14,15,16,17,18 EXRULE:INTERVAL=15;FREQ=MINUTELY;BYDAY=MO,TU,WE,TH,FR;BYHOUR=18;BYMINUTE=3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,34,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59
+
+Any Saturday whose month day is between 12 and 18:
+
+    DTSTART:20191219T130551Z RRULE:FREQ=MONTHLY;INTERVAL=1;BYDAY=SA;BYMONTHDAY=12,13,14,15,16,17,18
+
+