Not really Blake, Time, existence, as an undifferentiated singularity is eternal, everlasting, the Reality of the Moment, the Here and Now, “Now is the Time”.
Time;
Blake wrote;Time only began to exist when the universe began so it's like asking what lays north of the north pole.
Time, Space and Motion existed as undifferentiated Singularities, in the Beginning, before, prior to, the moment of Creation.
It is differentiated Time itself that has a beginning, that came into existence a Planck moment of Time after the Creation of the Reality of First Cause.
The Reality of First Cause, being an affect, not being born of what is now call ordinary means, Cause and Effect, Mother Nature, being born of a State or Condition, of the Reality of that existed a Planck Moment in Time prior to the moment of Creation.
Time, “differentiated Time”, being an affect, spontaneously having it affect upon the Reality of the moment, “The Here and Now,” existence itself.
Differentiated Time not being the only Time in existence a Planck moment of Time after the Creation of the Reality of First Cause; the uncaused cause being an affect.
Undifferentiated Time, the Singularity of Time, the Reality of the moment, the Here and Now, being everlasting; the Singularity of, Undifferentiated Time, Space and Motion existing before but also after the moment of Creation.
"The Reality of First Cause not being born of cause and effect, actually being an affect; the Reality of First Cause (as in the Butterfly Effect) being the single direct material cause of the system of Chaos that has made manifest the Heavens and the Earth, the Universe, the Reality of Everything that exists in the material sense of the word; Differentiated Time spontaneously coming into existence as an affect, the result of, being born of said System of Chaos.