diff --git a/edosl0util/rdrgen.py b/edosl0util/rdrgen.py
index a9d2ac2101181006199ba8ecc39ccde70a12d784..947a875fcb4500dd8399d5869af18c56e980fc17 100644
--- a/edosl0util/rdrgen.py
+++ b/edosl0util/rdrgen.py
@@ -734,7 +734,7 @@ class GetJpssPacketTime(object):
 
 
 class ViirsGroupedPacketTimeTracker(object):
-    grouped_apids = list(range(800, 824)) + [825]
+    grouped_apids = list(range(800, 824)) + [825, 827, 828]
 
     @classmethod
     def tracks_apid(cls, apid):