When setting up a schedule in Foglight 5.5.8 to run every 3rd Sunday of the month, it does not correctly identify the 3rd Sunday.
As an example:
Create a schedule to run every 3rd Sunday of a month and when finish, click on "View Schedule". The calendar displays the 3rd Sunday in February on the 12th and in March the 3rd Sunday is the 11th. In April it correctly identifies the 3rd Sunday as the 15th.
Please upgrade to the latest Foglight version 5.6.x as the issue is fixed in that version.