docs: def get_end_start_epochs(year, month, day, direction, unit, count):
      """ Gets epoch from a start date and epoch from a shifted date
  
      Args:
          year: Int between 1 and 9999.
          month: Int between 1 and 12.
          day: Int between 1 and 31.
          direction: String to shift time forwards or backwards.
              Valid values: 'last', 'next'.
          unit: String of time period unit for count argument.
              How far back to check historical market data.
              Valid values: 'hour', 'day', 'week', 'month', 'year'.
          count: Int of units.
              How far back to check historical market data?
  
      Returns:
          Dict of int epochs in UTC with keys 'initial' and 'shifted'
      """
      if year or month or day: # Date is specified
          if not year:
              year = 2017
          if not month:
              month = 1
          if not day:
              day = 1
          initial_delorean = date_to_delorean(year, month, day)
      else: # Date is not specified, get current date
          count += 1 # Get another date because market is still open
          initial_delorean = now_delorean()
      
      initial_epoch = int(initial_delorean.epoch)
      shifted_epoch = shift_epoch(initial_delorean, direction, unit, count)
      return { 'initial': initial_epoch, 'shifted': shifted_epoch }