I thought i was in the wrong thread for a minute with everyone talking about past events, so ill add something to that. I forgot about the fact that the Mar 2019 NE hills event was exactly on 23rd. As it snowed there one year later on the 23rd.
Come to think of it. CT has seen a snow event in 5 of the last 7 years on or around the Mar 21-23rd time frame
March 21st 2015 - 2-7", southern CT focused
March 21st 2016 - 2-7", stripe of 4-7 across central and NE CT
March 2017 - none
March 21st 2018 - 0-8", 6-8 across far SW CT and 2-6" across southern half of CT, big bust
March 23rd 2019 - 0-6", Up to around 6" in the NE hills, most of the state nearly nothing
March 23rd 2020 - 0-6", 2-6" most of northern half of CT, southern CT 0-2"
March 2021 - none
It's like December 5th of the early 2000s. It would also seem to snow around that date for a few years around here back then.