diff --git a/backend/trip/alembic/versions/54aec61bc15d_tripday_date.py b/backend/trip/alembic/versions/54aec61bc15d_tripday_date.py
new file mode 100644
index 0000000..a5e3d68
--- /dev/null
+++ b/backend/trip/alembic/versions/54aec61bc15d_tripday_date.py
@@ -0,0 +1,33 @@
+"""TripDay date feature
+
+Revision ID: 54aec61bc15d
+Revises: b6d707f9c35a
+Create Date: 2025-10-22 14:41:46.343276
+
+"""
+
+import sqlalchemy as sa
+import sqlmodel.sql.sqltypes
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = "54aec61bc15d"
+down_revision = "b6d707f9c35a"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("tripday", schema=None) as batch_op:
+        batch_op.add_column(sa.Column("dt", sa.Date(), nullable=True))
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("tripday", schema=None) as batch_op:
+        batch_op.drop_column("dt")
+
+    # ### end Alembic commands ###
diff --git a/backend/trip/models/models.py b/backend/trip/models/models.py
index 9097e0e..3995641 100644
--- a/backend/trip/models/models.py
+++ b/backend/trip/models/models.py
@@ -455,10 +455,12 @@ class TripInvitationRead(TripReadBase):
 
 class TripDayBase(SQLModel):
     label: str
+    dt: date | None = None
 
 
 class TripDay(TripDayBase, table=True):
     id: int | None = Field(default=None, primary_key=True)
+
     trip_id: int = Field(foreign_key="trip.id", ondelete="CASCADE", index=True)
     trip: Trip | None = Relationship(back_populates="days")
 
@@ -473,6 +475,7 @@ class TripDayRead(TripDayBase):
     def serialize(cls, obj: TripDay) -> "TripDayRead":
         return cls(
             id=obj.id,
+            dt=obj.dt,
             label=obj.label,
             items=[TripItemRead.serialize(item) for item in obj.items],
         )