Hello Nicole,
It looks like this calendar has undergone a lot of customization by the looks of it.
Did you do this customization on your own, or did you have a developer do it? I would first check with the developer (if it is not yourself) to make sure they pulled the data correctly to show for the current day.
Also, can you ensure you have set up your time zone settings in WordPress Settings? Sometimes there can be a conflict there, where WordPress is ahead of you, so events with times set up will be in another time zone.
Can you also confirm you are using the latest version of our plugins and add ons, and are on the latest version of WordPress?
Thanks!