On December 1, 2009, amendments to the Federal Rules of Civil, Appellate and Bankruptcy Procedure took effect. Most of the rules change timing requirements and the method for calculating deadlines. The most pervasive change is the adoption of a “days are days” approach to computing time periods. Gone are the days when one would exclude Saturdays, Sundays, and holidays when calculating a short deadline. To compensate for the new counting method and to ensure that presumptive deadlines are otherwise reasonable, many deadlines have been revised, some significantly. (For example, post-trial motions are now due 28 days after entry of the judgment, not 10 days as in the past.) There are also new rules governing how to compute time when a deadline is expressed in hours (not days), and the presumptive time-of-day deadline when e-filing. Click here for a chart summarizing the most salient changes in the timing rules that affect post-trial and appellate proceedings.