If you need a reminder (I posted this already):

  • There is no firm time for the BOJ announcement and statement
  • Its likely in the 0230 - 0330 GMT time window

That time window is based on past experience, for example:

2015

  • 21 January 12.29pm 0329GMT
  • 18 February 11.49am 0249GMT
  • 17 Mar 12.04pm 0304GMT
  • 8 Apr 12.36pm 0336GMT
  • 30 Apr 1.04pm (one day meeting) 0404GMT
  • 22 May 11.49pm 0249GMT
  • 19 Jun 12.04pm 0304GMT
  • 15 Jul 12.18pm 0318GMT
  • 7 Aug 12.18pm 0318GMT
  • 15 Sep 12.07pm 0307GMT
  • 7 Oct 12.00pm 0300GMT
  • 30 Oct 12.22pm (one day meeting) 0322GMT
  • 19 November 2015 12.17pm 0317GMT
  • 18 December 2015 12.51pm - added tiny easing 0351GMT

-

2016

  • 29 January 12.38pm 0338GMT - added easing (negative interest rate)
  • 15 March 2016 1235pm 0335GMT
  • 28 April 2016 12.01pm 0301GMT
  • 16 June 2016 11.45am 0245GMT
  • 29 July 2016 12.44pm 0344GMT (more easing, added in further ETF purchases)
  • 21 September 2016 1.18pm Tokyo time, 0418GMT (comprehensive review and a stack of new policy moves)
  • 01 November 2016 0254GMT
  • 20 December 2016 0251GMT

-

2017

  • 31 January 2017 1156AM Tokyo time, 0256GMT (maintains policy steady)
  • 16 March 2017 1154am Tokyo time, 0254GMT (maintains policy steady)
  • 27 April 2017 1214pm Tokyo time, 0314GMT (maintains policy steady, upgraded economic outlook, pushes out inflation forecasts)
  • 16 June 2017 1154am, 0254GMT (maintains policy steady, maintains economic outlook ... boosts its outlook for private consumption)
  • 20 July 2017 1210 Tokyo time 0310GMT (maintains policy steady, upgraded economic outlook, pushes out inflation forecasts)
  • 21 September 2017 0315GMT (maintains policy steady, upgraded assessment on public investment)
  • 31 October 2017 0304 GMT (maintains policy steady ... noob on the Board Kataoka wants more easing!)
  • 21 December 2017 0245 GMT (maintains policy steady ... noob on the Board Kataoka wants more easing ... again. BOJ kept economic assessment unchanged)

-

2018

  • 23 January 2018 0314 GMT - monetary policy held steady
  • 9 March 2018 ... ??? Stay tuned!

For a meeting where no change in policy will be announced (no change is the expectation today) the result tends to be earlier in that time window rather than later.