diff --git a/config/db.go b/config/db.go
index 30fa693..53214c3 100644
--- a/config/db.go
+++ b/config/db.go
@@ -20,7 +20,7 @@ type Database struct {
 }
 
 func (c Database) DSN() string {
-	return fmt.Sprintf("host=%s port=%s dbname=%s user=%s password=%s sslmode=%s", c.Host, c.Port, c.DB, c.Username, c.Password, c.SslMode)
+	return fmt.Sprintf("host=%s port=%s dbname=%s user=%s password=%s sslmode=%s TimeZone=UTC", c.Host, c.Port, c.DB, c.Username, c.Password, c.SslMode)
 }
 
 func (c Database) ConnectionMaxLifetime() time.Duration {
diff --git a/internal/handlers/http/order/order.go b/internal/handlers/http/order/order.go
index 309184f..aebf8e5 100644
--- a/internal/handlers/http/order/order.go
+++ b/internal/handlers/http/order/order.go
@@ -276,13 +276,13 @@ func (h *Handler) toHistoryOrderResponse(resp *entity.HistoryOrder) response.His
 		ID:           resp.ID,
 		Employee:     resp.Employee,
 		Site:         resp.Site,
-		Timestamp:    resp.Timestamp.Format(time.RFC3339),
-		BookingTime:  resp.BookingTime.Format(time.RFC3339),
+		Timestamp:    resp.Timestamp.Format("2006-01-02 15:04:05"),
+		BookingTime:  resp.BookingTime.Format("2006-01-02 15:04:05"),
 		Tickets:      resp.Tickets,
 		PaymentType:  resp.PaymentType,
 		Status:       resp.Status,
 		Amount:       resp.Amount,
-		VisitDate:    resp.VisitDate.Format(time.RFC3339),
+		VisitDate:    resp.VisitDate.Format("2006-01-02"),
 		TicketStatus: resp.TicketStatus,
 		Source:       resp.Source,
 	}
diff --git a/internal/handlers/http/transaction/transaction.go b/internal/handlers/http/transaction/transaction.go
index 5b70f4f..57cf086 100644
--- a/internal/handlers/http/transaction/transaction.go
+++ b/internal/handlers/http/transaction/transaction.go
@@ -101,7 +101,7 @@ func (h *TransactionHandler) ToTransactionListResponse(transactions []*entity.Tr
 			ID:              transaction.ID,
 			TransactionType: transaction.TransactionType,
 			Status:          transaction.Status,
-			CreatedAt:       transaction.CreatedAt,
+			CreatedAt:       transaction.CreatedAt.Format("2006-01-02 15:04:05"),
 			SiteName:        transaction.SiteName,
 			Amount:          transaction.Amount,
 			PartnerName:     transaction.PartnerName,
diff --git a/internal/handlers/response/transaction.go b/internal/handlers/response/transaction.go
index c6d67c5..d66baea 100644
--- a/internal/handlers/response/transaction.go
+++ b/internal/handlers/response/transaction.go
@@ -1,17 +1,15 @@
 package response
 
-import "time"
-
 type TransactionListItem struct {
-	ID              string    `json:"id"`
-	TransactionType string    `json:"transaction_type"`
-	Status          string    `json:"status"`
-	CreatedAt       time.Time `json:"created_at"`
-	SiteName        string    `json:"site_name"`
-	Amount          int64     `json:"amount"`
-	PartnerName     string    `json:"partner_name"`
-	Total           int64     `json:"total"`
-	Fee             int64     `json:"fee"`
+	ID              string `json:"id"`
+	TransactionType string `json:"transaction_type"`
+	Status          string `json:"status"`
+	CreatedAt       string `json:"created_at"`
+	SiteName        string `json:"site_name"`
+	Amount          int64  `json:"amount"`
+	PartnerName     string `json:"partner_name"`
+	Total           int64  `json:"total"`
+	Fee             int64  `json:"fee"`
 }
 
 type TransactionListResponse struct {