Update web/core/forms.py

web/core/forms.py

@@ -1,6 +1,7 @@
 from django import forms
 from .models_ann import Announcement
 from django.forms import ModelForm, Textarea
+from django.utils import timezone
 
 
 class ImportForm(forms.Form):
@@ -68,3 +69,7 @@ class AnnouncementForm(ModelForm):
         widgets = {
             "message": Textarea(attrs={"rows": 6, "placeholder": "What’s new in this release…"}),
         }
+
+    def clean_start_at(self):
+        v = self.cleaned_data.get("start_at")
+        return v or timezone.now()