Imagine you're in the Northern Hemisphere and you face east toward the rising sun. Over the course of the day, the sun will seem to move to the south, and then set in the west. This forms a "sunwise" turn, which is what we now call "clockwise" because we made clocks in imitation of sundials.
You rarely hear voiced plosives in spoken German in general. Negative VOTs are virtually unheard of. The distinction would be more accurate if described as aspirated/unaspirated than unvoiced/voiced.
I guess what I wanna say is that German 'd's are most likely gonna be realized as /t/, no matter where they occur in the utterance.