I'm not a licensed mortician, but I'm sure it depends on how busy the place is that your work at. The hours obviously depend on the corpses entering the funeral home. You can be called at any hour of...
An hour, we use "an" next to a word start with vowels letters like "a, e, i, o, u" and we use "a" to a word starts with consonant letters ( b, c, d, f, g, h, j, k, l, m, n, p, q, r, s, t, v, w, x, y,...