diff --git a/internal/modules/production/recordings/services/recording.service.go b/internal/modules/production/recordings/services/recording.service.go
index 4465a039..b408995f 100644
--- a/internal/modules/production/recordings/services/recording.service.go
+++ b/internal/modules/production/recordings/services/recording.service.go
@@ -165,14 +165,13 @@ func (s recordingService) GetNextDay(c *fiber.Ctx, projectFlockKandangId uint) (
 		return 0, fiber.NewError(fiber.StatusBadRequest, "project_flock_kandang_id is required")
 	}
 
-	db := s.Repository.DB().WithContext(c.Context())
-	next, err := s.Repository.GenerateNextDay(db, projectFlockKandangId)
+	day, err := s.computeRecordingDay(c.Context(), projectFlockKandangId, time.Now().UTC())
 	if err != nil {
-		s.Log.Errorf("Failed to compute next recording day for project_flock_kandang_id=%d: %+v", projectFlockKandangId, err)
+		s.Log.Errorf("Failed to compute recording day for project_flock_kandang_id=%d: %+v", projectFlockKandangId, err)
 		return 0, err
 	}
 
-	return next, nil
+	return day, nil
 }
 
 func (s *recordingService) CreateOne(c *fiber.Ctx, req *validation.Create) (*entity.Recording, error) {
@@ -214,6 +213,11 @@ func (s *recordingService) CreateOne(c *fiber.Ctx, req *validation.Create) (*ent
 		}
 	}
 
+	day, err := s.computeRecordingDay(ctx, pfk.Id, recordTime)
+	if err != nil {
+		return nil, err
+	}
+
 	if !isLaying && len(req.Eggs) > 0 {
 		return nil, fiber.NewError(fiber.StatusBadRequest, "Egg details permitted only for laying project flocks")
 	}
@@ -227,13 +231,8 @@ func (s *recordingService) CreateOne(c *fiber.Ctx, req *validation.Create) (*ent
 	}
 	var createdRecording entity.Recording
 	transactionErr := s.Repository.DB().WithContext(ctx).Transaction(func(tx *gorm.DB) error {
-		nextDay, err := s.Repository.GenerateNextDay(tx, req.ProjectFlockKandangId)
-		if err != nil {
-			s.Log.Errorf("Failed to determine recording day: %+v", err)
-			return err
-		}
 		if s.ProductionStandardSvc != nil {
-			if err := s.ProductionStandardSvc.EnsureWeekAvailable(ctx, pfk.ProjectFlock.ProductionStandardId, category, nextDay); err != nil {
+			if err := s.ProductionStandardSvc.EnsureWeekAvailable(ctx, pfk.ProjectFlock.ProductionStandardId, category, day); err != nil {
 				return err
 			}
 		}
@@ -247,7 +246,6 @@ func (s *recordingService) CreateOne(c *fiber.Ctx, req *validation.Create) (*ent
 			return fiber.NewError(fiber.StatusBadRequest, "Recording for this project flock today already exists")
 		}
 
-		day := nextDay
 		createdRecording = entity.Recording{
 			ProjectFlockKandangId: req.ProjectFlockKandangId,
 			RecordDatetime:        recordTime,
@@ -1114,6 +1112,40 @@ func (s *recordingService) resolvePopulationWarehouseID(ctx context.Context, pro
 	return 0, fiber.NewError(fiber.StatusBadRequest, "Source product warehouse populasi tidak ditemukan")
 }
 
+func (s *recordingService) computeRecordingDay(ctx context.Context, projectFlockKandangID uint, recordTime time.Time) (int, error) {
+	if projectFlockKandangID == 0 {
+		return 0, fiber.NewError(fiber.StatusBadRequest, "Project flock kandang tidak valid")
+	}
+
+	populations, err := s.ProjectFlockPopulationRepo.GetByProjectFlockKandangID(ctx, projectFlockKandangID)
+	if err != nil {
+		s.Log.Errorf("Failed to fetch populations for project_flock_kandang_id=%d: %+v", projectFlockKandangID, err)
+		return 0, fiber.NewError(fiber.StatusInternalServerError, "Gagal mengambil data populasi")
+	}
+
+	var chickinDate time.Time
+	for _, pop := range populations {
+		if pop.ProjectChickin == nil || pop.ProjectChickin.ChickInDate.IsZero() {
+			continue
+		}
+		if chickinDate.IsZero() || pop.ProjectChickin.ChickInDate.Before(chickinDate) {
+			chickinDate = pop.ProjectChickin.ChickInDate
+		}
+	}
+	if chickinDate.IsZero() {
+		return 0, fiber.NewError(fiber.StatusBadRequest, "Tanggal chick in tidak ditemukan")
+	}
+
+	chickinDay := time.Date(chickinDate.Year(), chickinDate.Month(), chickinDate.Day(), 0, 0, 0, 0, time.UTC)
+	recordDay := time.Date(recordTime.Year(), recordTime.Month(), recordTime.Day(), 0, 0, 0, 0, time.UTC)
+	diff := int(recordDay.Sub(chickinDay).Hours() / 24)
+	if diff < 0 {
+		return 0, fiber.NewError(fiber.StatusBadRequest, "Record date tidak boleh sebelum tanggal chick in")
+	}
+
+	return diff + 1, nil
+}
+
 func buildWarehouseDeltas(
 	oldDepletions, newDepletions []entity.RecordingDepletion,
 	oldEggs, newEggs []entity.RecordingEgg,