Throw this in an initializer and you'll be able to display date/time strings however you want. Just pass object.date_field.to_s(:time_with_zone), etc.

date_time_formats.rb

Time::DATE_FORMATS.merge!(
  datetime_military: '%Y-%m-%d %H:%M',
  datetime:          '%Y-%m-%d %I:%M%P',
  time:              '%l:%M%p',
  time_with_zone:    '%l:%M%p %Z', 
  time_military:     '%H:%M%P',
  datetime_short:    '%m/%d %I:%M',
  date:              '%e',
  day:               '%a',
  time_zone:         '%Z',
  date_time_long:    '%A, %b %e %Y at %l:%M%p %Z',
)