The planets Mars and Uranus will at their closest in the evening sky on 20 January 2021. Unfortunately, the Moon will also be very close to these two planets which could make it difficult to see Uranus. Mars, however, is bright enough to be easily viewed even with the Moon. Currently, Mars has a magnitude of 0.16 while Uranus is considerably dimmer at magnitude 5.76 — making Mars ~175 times brighter than Uranus.
I chose to shoot the two planets a few days early to avoid any issues with the Moon and clouds from an approaching winter storm. Besides, the appearance a few days either side of the date of conjunction would not look too much different.