Based on my extensive education on astronomy (received from YouTube videos), astrophysicists generally theorize that there needs to be an atmosphere before any moderation of temperatures between day side and night side occurs in tidally locked planets. Given how close they are estimated to be to their sun and their estimated temperatures, they probably don’t have atmospheres (being long since stripped away by solar wind from their sun).
In addition, considering how close in their orbits are, the star may be in the process of consuming the planets.
On a completely unrelated matter, I read the Wikipedia biography entry for your username. How did you come to choose this noteworthy Roman general?
I took a seminar on Tacitus once and the professor talked about Verginius Rufus. The historian Tacitus gave the eulogy at his funeral. He was a shining example of how one can be a person of integrity in the midst of tyranny and corruption.