diff --git a/hugo/content/Design/_index.md b/hugo/content/Design/_index.md
index 062cbce7e0..afa7ece3f9 100644
--- a/hugo/content/Design/_index.md
+++ b/hugo/content/Design/_index.md
@@ -194,6 +194,21 @@ Schedules are removed automatically when the configmaps are deleted.
 
 PGO Scheduler uses the `UTC` timezone for all schedules.
 
+### Schedule Expression Format
+
+Schedules are expressed using the following rules:
+
+```
+Field name   | Mandatory? | Allowed values  | Allowed special characters
+----------   | ---------- | --------------  | --------------------------
+Seconds      | Yes        | 0-59            | * / , -
+Minutes      | Yes        | 0-59            | * / , -
+Hours        | Yes        | 0-23            | * / , -
+Day of month | Yes        | 1-31            | * / , - ?
+Month        | Yes        | 1-12 or JAN-DEC | * / , -
+Day of week  | Yes        | 0-6 or SUN-SAT  | * / , - ?
+```
+
 ### pgBackRest Schedules
 
 pgBackRest schedules require pgBackRest enabled on the cluster to backup.  The scheduler
diff --git a/hugo/content/Operator CLI/_index.md b/hugo/content/Operator CLI/_index.md
index f1c5dcdba4..d6f3cb76d6 100644
--- a/hugo/content/Operator CLI/_index.md	
+++ b/hugo/content/Operator CLI/_index.md	
@@ -226,12 +226,12 @@ before you do a restore.
 
 #### Automated full pgBackRest backups every Sunday at 1 am
 
-    pgo create schedule mycluster --schedule="0 1 * * 7" \
+    pgo create schedule mycluster --schedule="0 1 * * SUN" \
         --schedule-type=pgbackrest --pgbackrest-backup-type=full
 
-#### Automated diff pgBackRest backups every Sunday at 1 am
+#### Automated diff pgBackRest backups every Monday-Saturday at 1 am
 
-    pgo create schedule mycluster --schedule="0 1 * * 7" \
+    pgo create schedule mycluster --schedule="0 1 * * MON-SAT" \
         --schedule-type=pgbackrest --pgbackrest-backup-type=diff
 
 #### Automated pgBaseBackup backups every day at 1 am