“…With the development of research, there are many publications studying the existence, stability, controllability, and periodicity of solutions for non-instantaneous impulsive differential equations; see for example [1,5,7,9,11,14,15,16,18,20,22,23,24,25]. Motivated by the results based on conformable derivatives, [2,3,4,6,8,10,13,17,19,21], we consider the homogeneous linear conformable non-autonomous problem…”