; minus (II) the hourly imports of that interregional transmission planning region; (E) calculates the present-day coincident peak loads of the interregional transmission planning regions by— (i) defining the present-day coincident peak load of each interregional transmission planning region as being equal to the last 1/10 of the 99th percentile (99.9th percentile) of the coincident hourly load of that interregional transmission planning region; and (ii) defining the coincident hourly load of each interregional transmission planning region as being equal to the sum obtained by adding, with respect to each hour, the hourly loads of all balancing authorities that, in the determination of the Commission, most closely correspond to the interregional transmission planning region in question using data from Form EIA–930 of the Energy Information Administration for the 5-year period ending on— (I) for each plan described in subparagraph (G) that is required to be submitted by the date described in that subparagraph, the date that is 1 year before the date of enactment of this section; and (II) for each plan submitted under paragraph (4)(A) and each updated plan submitted under paragraph (4)(B), the date that is 1 year before the deadline for submission of that plan