GSA Office and Bar will be back to official scheduled times effective from September 1st 2017. GSA Office will be open from Tuesday & Wednesday 9:00 AM – 3:00 PM, Thursday 9:00 AM – 12:00 PM (Noon). Windsor Castle Bar will be open on Monday, Tuesday & Wednesday from 3:00pm – 10:00pm, Thursday: 3:00pm – 11:00pm and Friday: 12:00pm – 12am. Saturday & Sunday: Closed. Thank you for your understanding!.