Not quite a dream - but still uncanny

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This morning I woke up from a sort of dream; basically all it was, was a vision of a digital clock with green numbers against a black background, showing the time of 7:52. I woke up, thought ‘that was a bit odd’, looked at the time and it was 7:53. Weird or what? I couldn’t have somehow seen the time through my closed eyelids because although we do have a digital clock radio in the bedroom it is facing away from the bed so the lighted screen doesn’t disturb me. And it has black numbers on a grey background. And I can’t have heard anyone announcing the time on the radio or anything like that because everything was off; the alarm function is only set on weekdays and then it goes off at 6:57 anyway, and all was quiet. Any explanations??