Designate JST for update timestamp

main.go

@@ -245,7 +245,11 @@ func main() {
 
 	output := battleSchedule()
 	output += salmonRunSchedule()
-	output += "updated at " + time.Now().Format("1/2 15:04") + "\n"
+	jst, err := time.LoadLocation("Asia/Tokyo")
+	if err != nil {
+		panic(err)
+	}
+	output += "updated at " + time.Now().In(jst).Format("1/2 15:04") + "\n"
 	print(output)
 
 	msgidstore := NewMsgIDStore()