Magnavox TV. I have 3 TVs. Can you help me determine if I will need converter boxes for them next

Question

I have 3 TVs. Can you help me determine if I will need converter boxes for them next year? First is a Philips Magnavox TV. Not sure how old it is. Serial #51314240. Model: TS2746 C221. Manufactured maybe in 2000. Date is not clear.Second is also Magnavox Serial #60833697. Model MT 2501 C125. Manufactured 8/01.Third is a Symphonic. Serial #V48434620. Model ST 419E. Manufactured 11/04.from: [e-mail] you very much