diff --git a/01/README.md b/01/README.md
index 27a4975..5bf96e0 100644
--- a/01/README.md
+++ b/01/README.md
@@ -1,14 +1,16 @@
-# [Day 1](https://adventofcode.com/2022/day/1) 
+# [Day 1](https://adventofcode.com/2023/day/1) 
 :gift:
 
 Today's language: **Python**
+Execution time: **0,021 s**
 
 Both tasks are solved in one hell of a oneliner each:
+
 - Task 1: 153 characters / line
 - Task 2: 363 characters / line
 
-<!-- one-liners -->
 
 ```shell
-p day01.py
+python3 day01.py
 ```
+<!-- one-liners -->
diff --git a/02/README.md b/02/README.md
index 7654a03..3c0ab48 100644
--- a/02/README.md
+++ b/02/README.md
@@ -2,12 +2,12 @@
 :gift::gift:
 
 Today's language: **Rust**
+Execution time: **0,002 s**
 
 My very first rust program!
 
-<!-- my very first rust program -->
-
 ```shell
 rustc day02.rs
 ./day02
 ```
+<!-- my very first rust program -->
diff --git a/03/README.md b/03/README.md
index 94e368c..ec1d043 100644
--- a/03/README.md
+++ b/03/README.md
@@ -2,6 +2,7 @@
 :gift::gift::gift:
 
 Today's language: **Rust**
+Execution time: **0,006 s**
 
 ```shell
 rustc day03.rs
diff --git a/04/README.md b/04/README.md
index 57ee78e..1e2abca 100644
--- a/04/README.md
+++ b/04/README.md
@@ -2,6 +2,7 @@
 :gift::gift::gift::gift:
 
 Today's language: **Rust**
+Execution time: **0,004 s**
 
 ```shell
 rustc day04.rs
diff --git a/05/README.md b/05/README.md
index 47e8779..84c3a74 100644
--- a/05/README.md
+++ b/05/README.md
@@ -2,12 +2,12 @@
 :gift::gift::gift::gift::gift:
 
 Today's language: **Rust**
+Execution time: **0,009 s**
 
-Super fast, it runs both tasks in 0,002s on my pc.
-
-<!-- very efficient -->
+Super fast!
 
 ```shell
 rustc day05.rs
 ./day05
 ```
+<!-- very efficient -->
diff --git a/06/README.md b/06/README.md
index da582e0..e71fe83 100644
--- a/06/README.md
+++ b/06/README.md
@@ -2,12 +2,12 @@
 :gift::gift::gift::gift::gift::gift:
 
 Today's language: **Rust**
+Execution time: **0,001 s**
 
 *Midnight formula go brrrrr*
 
-<!-- quadratic formula go *brrrr* -->
-
 ```shell
 rustc day06.rs
 ./day06
 ```
+<!-- quadratic formula go *brrr* -->
diff --git a/07/README.md b/07/README.md
index e995e72..b1afc68 100644
--- a/07/README.md
+++ b/07/README.md
@@ -2,6 +2,7 @@
 :gift::gift::gift::gift::gift::gift::gift:
 
 Today's language: **Rust**
+Execution time: **0,007 s**
 
 Not pretty, but pretty fast.
 
@@ -9,4 +10,4 @@ Not pretty, but pretty fast.
 rustc day07.rs
 ./day07
 ```
-<!-- -->
+<!-- not pretty, but pretty fast -->
diff --git a/README.md b/README.md
index bca1fb2..91625f9 100644
--- a/README.md
+++ b/README.md
@@ -2,11 +2,13 @@
 This is a repository for my solutions for the [advent of code 2023](https://adventofcode.com/2023).
 
 <!-- table begin -->
-| Day      | Language | Execuction time | Comment                      |
-|:---:     |:---:     | ---:            | ---                          |
-| [01](01) | Python   | 0,015 s         | one-liners                   |
-| [02](02) | Rust     | 0,001 s         | my very first rust program   |
-| [03](03) | Rust     | 0,001 s         |                              |
-| [04](04) | Rust     | 0,001 s         |                              |
-| [05](05) | Rust     | 0,001 s         | very efficient               |
-| [06](06) | Rust     | 0,001 s         | quadratic formula go *brrrr* |
+| Day      | Language | Execuction time | Comment                     |
+|:---:     |:---:     | ---:            | ---                         |
+| [01](01) | Python   | 0,021 s         | one-liners                  |
+| [02](02) | Rust     | 0,002 s         | my very first rust program  |
+| [03](03) | Rust     | 0,006 s         |                             |
+| [04](04) | Rust     | 0,004 s         |                             |
+| [05](05) | Rust     | 0,009 s         | very efficient              |
+| [06](06) | Rust     | 0,001 s         | quadratic formula go *brrr* |
+| [07](07) | Rust     | 0,007 s         | not pretty, but pretty fast |
+| [08](08) | Rust     | 0,039 s         |                             |
diff --git a/README.md.temp b/README.md.temp
index e0af62a..f4216b6 100644
--- a/README.md.temp
+++ b/README.md.temp
@@ -1,9 +1,10 @@
-# [Day X](https://adventofcode.com/2023/day/X) 
+# [Day DAY](https://adventofcode.com/2023/day/DAY) 
 :gift:
 
-Today's language: **Y**
+Today's language: **LANG**
+Execution time: **EXECTIME**
 
 ```shell
-
+HOWTORUN
 ```
-<!-- -->
+<!-- COMMENT -->
diff --git a/make_day_readme.sh b/make_day_readme.sh
new file mode 100755
index 0000000..70329ad
--- /dev/null
+++ b/make_day_readme.sh
@@ -0,0 +1,89 @@
+#!/bin/bash
+# pass comment as param $1 and select day with day=X ./make_day_readme.sh
+maxday=$(ls -d */ | sed -r 's|0*(.*)/|\1|g' | tail -1)
+[[ -z $day ]] && day=$maxday
+day_dir=$(printf "%02d" $day)
+readme=$day_dir/README.md
+
+FMT_VAR='\e[32m%s: \e[0m%s\n'
+FMT_ERR='\e[31m%s\e[0m\n'
+FMT_WARN='\e[33m%s\e[0m\n'
+
+echo Making Readme of day $day in $readme
+
+function find_lang {
+    # 1: fileext, 2: lang, 3: howto
+    sourcefile=$(ls $day_dir/*.$1 2> /dev/null)
+    [[ $? != 0 ]] && return
+    sourcefile=$(basename $sourcefile)
+    printf "$FMT_VAR" "Determined Langugae" "$2 ($sourcefile)"
+    sed -i "s/LANG/$2/" $readme
+    howto=$(echo "$3" | sed "s|SOURCE|$sourcefile|")
+    sed -i "s(HOWTORUN($howto(" $readme
+}
+
+function get_time {
+    cd $day_dir
+    exe=$(find . -type f -executable)
+    exe=$(basename $exe)
+    if [[ $(echo $exe | wc -w) != 1 ]]; then
+        printf "$FMT_ERR" "Found multiple or no executables for day $day: '$exe'"
+        return 1
+        time=Error
+    else
+        time=$({ time ./$exe; } 2>&1)
+        if [[ $? != 0 ]]; then
+            printf "$FMT_ERR" "Execution error in './$exe' in '$(pwd)'. Output:"
+            printf "\e[34m"
+            echo -e "$time"
+            printf "\e[0m"
+            return 1
+        fi
+        time=$(echo -e "$time" | tail -3 | head -1 | awk '{print $2}')
+        re='([[:digit:]]+)m([[:digit:]]+),([[:digit:]]+)s'
+        [[ $time =~ $re ]]
+        min=${BASH_REMATCH[1]}
+        sec=${BASH_REMATCH[2]}
+        msec=${BASH_REMATCH[3]}
+        if [[ $min != 0 ]]; then
+            time="$min m $sec,$msec s"
+        else
+            time="$sec,$msec s"
+        fi
+        # elif [[ $sec != 0 ]]; then
+        #     time="$sec,$msec s"
+        # else
+        #     time="$((msec+0)) ms"
+        # fi
+    fi
+}
+
+
+
+gifts=""
+for i in $(seq $day); do gifts+=":gift:"; done
+sed "s/DAY/$day/g" README.md.temp | sed "s/:gift:/$gifts/" > $day_dir/README.md
+get_time
+if [[ $? == 0 ]]; then
+    cd ..
+    printf "$FMT_VAR" "exectime" "$time"
+    sed -i "s/EXECTIME/$time/" $readme
+else
+    cd ..
+    printf "$FMT_WARN" "No execution time determined"
+    sed -i '/.*EXECTIME.*/d' $readme
+fi
+
+
+
+if [[ -z $1 ]]; then
+    printf "$FMT_WARN" "No comment provided"
+    sed -i "/<!-- COMMENT -->/d" $readme
+else
+    printf "$FMT_VAR" "Comment" "'$1'"
+    sed -i "s|COMMENT|$1|" $readme
+fi
+
+find_lang py Python "python3 SOURCE"
+find_lang rs Rust "rustc SOURCE\n./day${day_dir}"
+find_lang cpp C++ "g++ SOURCE -o day${day_dir}\n ./day${day_dir}"
diff --git a/make_readme.sh b/make_readme.sh
index 96b79de..406470e 100755
--- a/make_readme.sh
+++ b/make_readme.sh
@@ -1,38 +1,14 @@
 #!/bin/bash
 
-
-
 table="| Day | Language | Execuction time | Comment |\n"
 table+="|:---:|:---:| ---:| --- |\n"
 for day in $(seq -f "%02g" 1 25); do
     [[ ! -d "$day" ]] && continue
     # echo $day
-    lang=$(grep -E "Today's language: "'\*\*[a-zA-Z0-9_]+\*\*' $day/README.md | sed -r 's/.*\*\*(.+)\*\*.*/\1/')
-    exe=$(find $day -type f -executable)
-    if [[ $(echo $exe | wc -w) != 1 ]]; then
-        echo "Found multiple or no executables for day $day: '$exe'"
-        time=Error
-    else
-        time=$({ time ./$exe; } 2>&1 | tail -3 | head -1 | awk '{print $2}')
-        re='([[:digit:]]+)m([[:digit:]]+),([[:digit:]]+)s'
-        [[ $time =~ $re ]]
-        min=${BASH_REMATCH[1]}
-        sec=${BASH_REMATCH[2]}
-        msec=${BASH_REMATCH[3]}
-        if [[ $min != 0 ]]; then
-            time="$min m $sec,$msec s"
-        else
-            time="$sec,$msec s"
-        fi
-        # elif [[ $sec != 0 ]]; then
-        #     time="$sec,$msec s"
-        # else
-        #     time="$((msec+0)) ms"
-        # fi
-    fi
+    lang=$(grep -E "Today's language:" $day/README.md | sed -r 's/.*\*\*(.+)\*\*.*/\1/')
+    exectime=$(grep -E "Execution time:" $day/README.md | sed -r 's/.*\*\*(.+)\*\*.*/\1/')
     comment=$(grep -E "<!-- .* -->" $day/README.md | head -1 | sed -r 's/.*<!-- *(.*) *-->.*/\1/')
-    table+="| [$day]($day) | $lang | $time | $comment |\n"
-    
+    table+="| [$day]($day) | $lang | $exectime | $comment |\n"
 done
 # remove table from readme
 sed -i '/<!-- table begin -->/q' README.md