30 calendar days after the date of the enactment of this Act, the Chief Financial Officer for the District of Columbia shall submit to the appropriate committees of Congress, the Mayor, and the Council for the District of Columbia, a revised appropriated funds operating budget for the District of Columbia Public Schools that aligns schools budgets to actual enrollment. The revised appropriated funds budget shall be in the format of the budget that the District of Columbia government submitted pursuant to section 442 of the District of Columbia Home Rule Act (D.C. Official Code, sec. 1–204.42). 813. (a) Amounts appropriated in this Act as operating funds may be transferred to the District of Columbia's enterprise and capital funds and such amounts, once transferred, shall retain appropriation authority consistent with the provisions of this Act. (b) The District of Columbia government is authorized to reprogram or transfer for operating expenses any local funds transferred or reprogrammed in this or the four prior fiscal years from operating funds to capital funds, and such amounts, once transferred or reprogrammed, shall retain appropriation authority consistent with the provisions of this Act. (c) The District of Columbia government may not transfer or reprogram for operating expenses any funds derived from bonds, notes, or other obligations issued for capital projects. 814. None of the Federal funds appropriated in this Act shall remain available for obligation beyond the current fiscal year, nor may any be transferred to other appropriations, unless expressly so provided herein. 815. Except as otherwise specifically provided by law or under this Act, not to exceed 50 percent of unobligated balances remaining available at the end of fiscal year 2019 from appropriations of Federal funds made available for salaries and expenses for fiscal year 2019 in this Act, shall remain available through September 30, 2020, for each such account for the purposes authorized: Provided , That a request shall be submitted to the