Maggots cannot tell us when a murder took place. They can indicate when flies laid eggs on a corpse, and that reveals the point by which the person was definitely dead. In the warm summer months it would be possible to narrow that window to, say, Friday, and possibly, as deductions become increasingly refined, to Friday afternoon. But to expect an entomologist to give a definitive time of death to the hour would be like asking a weather forecaster in November to promise a white Christmas. The range of variables thwarts that level of accuracy.
