diff --git a/btrbk b/btrbk
index ce2a65d..78e1f22 100755
--- a/btrbk
+++ b/btrbk
@@ -170,11 +170,17 @@ function testConf {
 }
 
 function testDate {
-    if [ `date +%d` != "01" ]; then
-        bkRun "incremental"
-    else
-        bkRun "full"
+    if [ $BKCYCLE = "weekly" ]; then
+        local dateType = "+%u"
+    elif [ $BKCYCLE = "monthly" ]; then
+        local dateType = "+%d"
     fi
+    for i in ${!BKRETENTION[@]}; do
+        if [ `date $dateType` = ${BKRETENTION[$i]} ]; then
+            bkRun "full"
+        fi
+    done
+    bkRun "incremental"
 }
 
 function end {
@@ -196,7 +202,7 @@ function echoHelp {
     exit 1
 }
 
-options=$(getopt -l "backup,force,date::,restore::,full-restore::,help" -o "bfd::r::x::h" -- "$@")
+options=$(getopt -l "backup,force,date::,restore::,full-restore::,help" -o "bfx::h" -- "$@")
 eval set -- "$options"
 for i in ${!options[@]}; do
     case $1 in
diff --git a/btrbk.conf b/btrbk.conf
index 07479bd..6e716c1 100644
--- a/btrbk.conf
+++ b/btrbk.conf
@@ -22,6 +22,15 @@ RCLONEDIR="test:/mnt/bk/new/"
 #How many local snapshots should be kept
 KEEPLOCAL="10"
 
+#How often to run a full backup: "monthly" or "weekly"
+BKCYCLE="monthly"
+
+#Day when to run full Backup
+#can be specified multiple times 1-7 for weekely and 01-30 for monthly 
+#example ("01" "05" "23")
+BKRETENTION=("01")
+
+
 #Suffix name for incremental/full backups and retention 
 #example: [YYYY-mm-"full"] and will keep the last two backups 
 #For full Backups dont set retention below 1 or you will always delete your current backup which renders all following incremental backups useless