GRU's Customer Service/Business Offices will be Closed on the Following Days: 2017 Holiday Observance Date(s) New Year's Day Holiday Monday, Jan. 2, 2017 Martin Luther King Jr. Day Monday, Jan. 16, 2017 Memorial Day Monday, May 29, 2017 Independence Day Tuesday, July 4, 2017 Labor Day Monday, Sept. 4, 2017 Veterans' Day Friday, Nov. 10, 2017 Thanksgiving Day Thursday, Nov. 23, 2017 Day after Thanksgiving Friday, Nov. 24, 2017 Christmas Day Monday, Dec. 25, 2017 Additional Holiday Tuesday, Dec. 26, 2017 2018 Holiday Observance Date(s) New Year's Day Holiday Monday, Jan. 1, 2018 Martin Luther King Jr. Day Monday, Jan. 15, 2018 Memorial Day Monday, May 28, 2018 Independence Day Tuesday, July 4, 2018 Labor Day Monday, Sept. 3, 2018