diff --git a/core/views/forms.py b/core/views/forms.py
index a8bbdfd6..2c77561a 100644
--- a/core/views/forms.py
+++ b/core/views/forms.py
@@ -39,9 +39,8 @@ from django.forms import (
     DateInput,
     DateTimeInput,
     TextInput,
-    Widget,
 )
-from django.utils.timezone import now
+from django.utils.timezone import localtime, now
 from django.utils.translation import gettext
 from django.utils.translation import gettext_lazy as _
 from phonenumber_field.widgets import RegionalPhoneNumberWidget
@@ -115,7 +114,7 @@ class SelectUser(TextInput):
 
 def validate_future_timestamp(value: date | datetime):
     if value <= now():
-        raise ValueError(_("Ensure this timestamp is set in the future"))
+        raise ValidationError(_("Ensure this timestamp is set in the future"))
 
 
 class FutureDateTimeField(forms.DateTimeField):
@@ -123,8 +122,8 @@ class FutureDateTimeField(forms.DateTimeField):
 
     default_validators = [validate_future_timestamp]
 
-    def widget_attrs(self, widget: Widget) -> dict[str, str]:
-        return {"min": widget.format_value(now())}
+    def widget_attrs(self, widget: forms.Widget) -> dict[str, str]:
+        return {"min": widget.format_value(localtime())}
 
 
 # Forms