diff --git a/laravel_app/app/Jobs/ProjectDownloadTiffJob.php b/laravel_app/app/Jobs/ProjectDownloadTiffJob.php
index 3a5f862..4e78cee 100644
--- a/laravel_app/app/Jobs/ProjectDownloadTiffJob.php
+++ b/laravel_app/app/Jobs/ProjectDownloadTiffJob.php
@@ -24,7 +24,7 @@ class ProjectDownloadTiffJob implements ShouldQueue
     /**
      * Create a new job instance.
      */
-    public function __construct(ProjectDownload $download, Carbon $date,)
+    public function __construct(ProjectDownload $download, Carbon $date)
     {
         $this->date = $date;
         $this->download = $download;
diff --git a/laravel_app/app/Models/Project.php b/laravel_app/app/Models/Project.php
index 3af9cdd..b6ab522 100644
--- a/laravel_app/app/Models/Project.php
+++ b/laravel_app/app/Models/Project.php
@@ -20,6 +20,10 @@ class Project extends Model
 {
     use HasFactory;
 
+    protected $casts = [
+        'min_harvest_date' => 'date'
+    ];
+
     protected $fillable = [
         'name',
         'mail_template',
@@ -30,12 +34,16 @@ class Project extends Model
         'download_path',
         'pivot_json_path',
         'span_json_path',
-        'harvest_json_path'
+        'harvest_json_path',
+        'min_harvest_date'
     ];
 
     public static function saveWithFormData(mixed $formData)
     {
         $uniqueIdentifier = ['id' => $formData['id'] ?? null];
+        /**
+         * @var Project $project
+         */
         $project = Project::updateOrCreate($uniqueIdentifier, $formData);
         $baseFrom = 'livewire-tmp/';
         $baseTo = $project->download_path.'/Data/';
@@ -49,7 +57,9 @@ public static function saveWithFormData(mixed $formData)
         }
         if ($formData['harvest_file']) {
             Storage::copy($baseFrom.$formData['harvest_file']['tmpFilename'],$baseTo.'harvest.'.$formData['harvest_file']['extension']);
-            $project->update(['harvest_json_path' => $baseTo.'harvest.'.$formData['harvest_file']['extension']]);
+            if($project->update(['harvest_json_path' => $baseTo.'harvest.'.$formData['harvest_file']['extension']])) {
+                $project->setMinHarvestDate();
+            }
         }
     }
     private function upsertMailRecipients($formData)
@@ -333,14 +343,14 @@ public function getMosaicsFor(Carbon $endDate, int $offset= 7): array
             ->toArray();
     }
 
-    public function missingDownloadsInHarvestFile()
+    public function setMinHarvestDate():bool
     {
         if(!$this->harvest_json_path){
-            return;
+            return false;
         }
-        $dates = $this->downloads->map(fn($d)=>$d->date)->sort();
+        return $this->update(['min_harvest_date'=> $this->getMinimumDateFromHarvestExcelFile()->format('Y-m-d')]);
     }
-    private function getMinimumDateFromHarvestExcelFile()
+    private function getMinimumDateFromHarvestExcelFile():Carbon
     {
         $value = Storage::disk('local')->path($this->harvest_json_path);
         $data = Excel::toCollection(new \App\Imports\ExcelFileImport(),$value);