Final Action Dates and Dates for Filing published for December 2015 (fiscal year 2016), with the change from November 2015. Official source: travel.state.gov.
What changed
EB-2 (India) advanced 304 days, from 1 Aug 2006 to 1 Jun 2007.
F1 (Philippines) advanced 214 days, from 1 Jun 2002 to 1 Jan 2003.
EB-3 (China) advanced 105 days, from 1 Jan 2012 to 15 Apr 2012.
EB-3 (Philippines) advanced 47 days, from 15 Jun 2007 to 1 Aug 2007.
F1 (Rest of World, China, India) advanced 39 days, from 22 Feb 2008 to 1 Apr 2008.
F2A (Mexico) advanced 37 days, from 1 Apr 2014 to 8 May 2014.
F2A (Rest of World, China, India, Philippines) advanced 31 days, from 15 May 2014 to 15 Jun 2014.
F2B (Philippines) advanced 30 days, from 1 Nov 2004 to 1 Dec 2004.
F3 (Mexico) advanced 23 days, from 15 Jun 1994 to 8 Jul 1994.
EB-3 (India) advanced 21 days, from 1 Apr 2004 to 22 Apr 2004.
F2B (Rest of World, China, India) advanced 21 days, from 8 Feb 2009 to 1 Mar 2009.
F4 (Rest of World, China, India) advanced 21 days, from 1 Mar 2003 to 22 Mar 2003.
EB-3 (Rest of World, Mexico) advanced 17 days, from 15 Aug 2015 to 1 Sep 2015.
F2B (Mexico) advanced 17 days, from 22 Aug 1995 to 8 Sep 1995.
F3 (Rest of World, China, India) advanced 16 days, from 15 Jun 2004 to 1 Jul 2004.
F4 (Philippines) advanced 16 days, from 15 Jun 1992 to 1 Jul 1992.
F3 (Philippines) advanced 14 days, from 8 Oct 1993 to 22 Oct 1993.
F1 (Mexico) advanced 7 days, from 1 Dec 1994 to 8 Dec 1994.
Dates are exactly as published; C = Current, U = Unavailable. Some categories (EB-5 set-asides, EB-4 religious workers) are in the dataset. Priority dates earlier than the cut-off may be processed; see the FAQ.