Currently long date format are used in market, such as "margin call orders" and "blockchain order history".
e.g. September 19, 2015
or Movember 8, 2014 at 12:10:01 AM
That makes the date too long to fit into the table grid. I suggest to use short date format to make sure it can be displayed correctly in any case.
e.g. use 3-letter for month
and use 24 hour time rather than AM/PM