Here is a horoscope of the moment on December 19, 2017 that transit Saturn enters its own sign of Capricorn, a significant cosmic event. The horoscope is set for Washington DC with 25Vir18 rising which elects communicator Mercury as chart-ruler, though retrograde (signifying more delay).
Mercury in 3rd house as chart-ruler (and MC ruler) applies to one Ptolemaic aspect, a square to nebulous