diff --git a/scripts/RUN_12Z.sh b/scripts/RUN_12Z.sh
index 0bdd75fe4f..057308c359 100644
--- a/scripts/RUN_12Z.sh
+++ b/scripts/RUN_12Z.sh
@@ -34,10 +34,6 @@ cd ../../dbutil
 python rwis2archive.py $(date -u --date '1 days ago' +'%Y %m %d')
 python rwis2archive.py $(date -u +'%Y %m %d')
 
-cd ../other
-python ot2archive.py $(date -u --date '1 days ago' +'%Y %m %d')
-python ot2archive.py $(date -u +'%Y %m %d')
-
 cd ../util
 csh BACKUP.csh
 
diff --git a/scripts/RUN_20MIN.sh b/scripts/RUN_20MIN.sh
index 5e3df73687..8089d4f165 100644
--- a/scripts/RUN_20MIN.sh
+++ b/scripts/RUN_20MIN.sh
@@ -3,3 +3,6 @@
 cd ingestors/madis
 python to_iemaccess.py
 python extract_metar.py
+
+cd ../../other
+python ot2archive.py
diff --git a/scripts/RUN_MIDNIGHT.sh b/scripts/RUN_MIDNIGHT.sh
index 41b54e628f..5c25f5799a 100644
--- a/scripts/RUN_MIDNIGHT.sh
+++ b/scripts/RUN_MIDNIGHT.sh
@@ -8,8 +8,6 @@ cd asos
 python compute_daily.py
 
 cd ../other
-# Important that this runs first, so that srad is there.
-python ot2archive.py $(date --date '1 day ago' +'%Y %m %d')
 python update_daily_srad.py $(date --date '1 day ago' +'%Y %m %d')
 
 # Need this done so that IEMRE daily grids are there for DEP
diff --git a/scripts/other/ot2archive.py b/scripts/other/ot2archive.py
index a72ebad9df..5c74685392 100644
--- a/scripts/other/ot2archive.py
+++ b/scripts/other/ot2archive.py
@@ -1,42 +1,45 @@
 """
-Dump iem database of OT data to archive
-Runs at midnight and 12 UTC for previous day
+Migrate IEM Access data to the archive database.
+
+Called from RUN_20MIN.sh
 """
 import datetime
 import sys
 
 # third party
-from pyiem.util import get_dbconnc, logger, utc
+from pyiem.reference import ISO8601
+from pyiem.util import get_dbconnc, get_properties, logger, set_property, utc
 
 LOG = logger()
+PROPERTY_NAME = "ot2archive_last"
 
 
-def dowork(ts, ts2):
+def dowork(sts, ets):
     """Process between these two timestamps please"""
     # Delete any obs from yesterday
     OTHER, ocursor = get_dbconnc("other")
     IEM, icursor = get_dbconnc("iem")
-    ocursor.execute(
-        "DELETE from alldata WHERE valid >= %s and valid < %s", (ts, ts2)
-    )
-
     # Get obs from Access
     icursor.execute(
-        "SELECT c.*, t.id from current_log c JOIN stations t on "
-        "(t.iemid = c.iemid) WHERE valid >= %s and valid < %s "
-        "and t.network in ('OT', 'WMO_BUFR_SRF')",
-        (ts, ts2),
+        """
+        SELECT c.*, t.id from current_log c JOIN stations t on
+        (t.iemid = c.iemid) WHERE t.network in ('OT', 'WMO_BUFR_SRF') and
+        updated >= %s and updated < %s ORDER by updated ASC
+        """,
+        (sts, ets),
     )
     if icursor.rowcount == 0:
-        LOG.warning("found no results for ts: %s ts2: %s", ts, ts2)
+        LOG.warning("found no results for ts: %s ts2: %s", sts, ets)
 
+    deletes = 0
+    inserts = 0
     for row in icursor:
-        pday = 0
-        if row["pday"] is not None and float(row["pday"]) > 0:
-            pday = row["pday"]
-        alti = row["alti"]
-        if alti is None and row["mslp"] is not None:
-            alti = row["mslp"] * 0.03
+        # delete any previous obs
+        ocursor.execute(
+            "DELETE from alldata where station = %s and valid = %s",
+            (row["id"], row["valid"]),
+        )
+        deletes += ocursor.rowcount
         args = (
             row["id"],
             row["valid"],
@@ -44,29 +47,57 @@ def dowork(ts, ts2):
             row["dwpf"],
             row["drct"],
             row["sknt"],
-            alti,
-            pday,
+            row["alti"],
+            row["pday"],
             row["gust"],
             row["srad"],
             row["relh"],
+            row["skyl1"],
+            row["skyl2"],
+            row["skyl3"],
+            row["skyl4"],
+            row["skyc1"],
+            row["skyc2"],
+            row["skyc3"],
+            row["skyc4"],
+            row["srad_1h_j"],
         )
         ocursor.execute(
-            "INSERT into alldata(station, valid, tmpf, dwpf, drct, sknt, "
-            "alti, pday, gust, srad, relh) values "
-            "(%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s)",
+            """
+            INSERT into alldata(station, valid, tmpf, dwpf, drct, sknt,
+            alti, pday, gust, srad, relh, skyl1, skyl2, skyl3, skyl4,
+            skyc1, skyc2, skyc3, skyc4, srad_1h_j) values
+            (%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s)
+            """,
             args,
         )
+        inserts += 1
 
+    LOG.info("%s->%s deletes: %s inserts: %s", sts, ets, deletes, inserts)
     ocursor.close()
     OTHER.commit()
 
 
-def main(argv):
+def get_first_updated():
+    """Figure out which is the last updated timestamp we ran for."""
+    props = get_properties()
+    propvalue = props.get(PROPERTY_NAME)
+    if propvalue is None:
+        LOG.warning("iem property %s is not set, abort!", PROPERTY_NAME)
+        sys.exit()
+
+    dt = datetime.datetime.strptime(propvalue, ISO8601)
+    return dt.replace(tzinfo=datetime.timezone.utc)
+
+
+def main():
     """Run for a given 6z to 6z period."""
-    ts = utc(int(argv[1]), int(argv[2]), int(argv[3]), 6)
-    ts2 = ts + datetime.timedelta(hours=24)
-    dowork(ts, ts2)
+    last_updated = utc()
+    first_updated = get_first_updated()
+
+    dowork(first_updated, last_updated)
+    set_property(PROPERTY_NAME, last_updated)
 
 
 if __name__ == "__main__":
-    main(sys.argv)
+    main()