HOL Time
From HOL Wiki
Since the "real" Hogwarts is in the United Kingdom, all official HOL times are in GMT (Greenwich Meridian Time), if not stated otherwise. This is always the time London is in, no matter of daylight savings etc. To convert this time to where you live you add or subtract the number of hours difference you are from it (example: EST (Eastern Standard Time) is GMT -5)
Follow this link if you are unsure: Time Zone Converter.
ALL pages on the main HOL pages have a HOL-TIME in the upper right corner. It might be one hour off in March and/or September when Daylight Saving Time is introduced on different days in America and Europe.
Any meeting, quidditch match, etc. scheduled will be reffering to the HOL Time.
