Accurate EDD

hello mga mommy , I'm a first time mom. Nag pa check up po ako noon February 14 ,2024 yung Edd ko september 27,2024. Yung first ultrasound ko May 18, 2024 yung EDD ko september 24, 2024 and last ultrasound ko yung EDD ko is september 19, 2024 ano po yung mas accurate yung EDD?