We recently discovered a bug that caused some appointments in the month of April to display incorrectly on some browsers (in particular Safari, and Apple mobile devices). Appointments and availability after 4 PM were getting shifted forward 2 hours.
We've now released a fix to that bug, so all appointments will display correctly once again. For anyone who has temporarily switched to a different browser, you can now go back to your preferred Web Browser.
Thanks kindly to everyone who reported this bug!