mbostock/d3 — pull request #1277 by mbostock (2013-05-28 23:50:17+00:00)
Title: Partial fix for #1196 and d3.time.day in BST.

While note as complete a solution as #1197, this fixes the immediate problem of d3.time.day not returning midnights when on British Summer Time (BST), due to the UK being on permanent BST during 1970.