Think through what you have written above. You have rather confirmed my views. Matter in the category of concentrated energy in potential, once activated and two particles meet each other, matter with anti-matter, they annihilate each other as pure energy is produced in the process. Therefore, pure energy is an accident of matter against anti-matter. It means that matter must be involved for pure energy to be produced. Now, regarding time, you must use Logic. If a body cannot move, time cannot be accountant for. My point stands.
I don't want to belabor this but:
Unifying mass and energy
The most famous work of Einstein’s life also dates from 1905 (a busy year for him), when he applied the ideas of his relativity paper to come up with the equation
E=
mc2 that represents the relationship between mass
(m) and energy
(E).
In a nutshell, Einstein found that as an object approached the speed of light,
c, the mass of the object increased. The object goes faster, but it also gets heavier. If it were actually able to move at
c, the object’s mass and energy would both be infinite. A heavier object is harder to speed up, so it’s impossible to ever actually get the particle up to a speed of
c.
Until Einstein, the concepts of mass and energy were viewed as completely separate. He proved that the principles of conservation of mass and conservation of energy are part of the same larger, unified principle,
conservation of mass-energy. Matter can be turned into energy and energy can be turned into matter because a fundamental connection exists between the two types of substance.