GRU's Customer Service/Business Offices will be Closed on the Following Days: 2019 Holiday Observance Date(s) New Year's Day Tuesday, Jan. 1, 2019 Martin Luther King Jr. Day Monday, Jan. 21, 2019 Memorial Day Monday, May 27, 2019 Independence Day Thursday, July 4, 2019 Labor Day Monday, Sept. 2, 2019 Veteran's Day Monday, Nov. 11, 2019 Thanksgiving Day Thursday, Nov. 28, 2019 Day after Thanksgiving Friday, Nov. 29, 2019 Additional Holiday Tuesday, Dec. 24, 2019 Christmas Day Wednesday, Dec. 25, 2019