I honestly do not know, but i can may be give you the past dates, and may be we can guess the future;
HFCK:
2013 - 20th February
2012 - 22nd February
CFC Stanbic:
2011 - 21st March
Kenya Re-Insurance:
2013 - 24th April
2012 - 24th April
2011 - 20th April
Co-operative Bank:
2013 - 28th February
2012 - 8th March
2011 - 10th March
So, if i am to guess;
HFCK: 19th Feb 2014
CFC Stanbic: 21st March 2014
Kenya Re: 25th April 2014
Coop Bank: 7th March 2014
I'd also appreciate if better dates pop up! @Obiero, where at thou?
Receive with simplicity everything that happens to you.” ― Rashi