Ok-figured this one out, probably should have just waited a while before posting my problem. But in case anyone else runs into the same situation, might want to check the time zone in the Calendar App's associated email account. In my case a time zone hadn't been selected at all and the default simply made it incorrect. Therefore, when a New Event was added to a specific day it would appear on the day before because, according to the information in the email account, that made it correct.
