This code echos the right date but not in the desired format:
<?php echo $row_rsYb_memb['Date_Joined']; ?>

PRODUCES "Member Since: 2000-06-01"

When I try to format the date into Month and year using the following code the date is wrong!
<?php echo date('M Y', strtotime($row_rsYb_memb['Date_Joined'])); ?>

PRODUCES "Member Since: Dec 1969"

and the repeat region stopped working as well, uses the same date for each record