Issue selecting dates for Half Dome lottery

Hi all, I have a potentially very silly question. I am trying to enter the pre-season lottery for Half Dome permits. When I choose the dates I want to enter using the pop-up mini calendar on the website, it keeps going to the date before the date I select. For example, when I choose 29 May on the calendar, it then shows as 28 May in the confirmation page. I have tried on multiple laptops and phones but keep having the same issue. Should I just select the day before on the calendar so it shows as the "right" day? Or is there something about the entry technically starting at midnight on the day before. Thank you in advance!