def posix_time_to_http(posix_time):
  if posix_time:
    return email_utils.formatdate(posix_time, usegmt=True)
Convert posix time to HTML header time format.
dataset/ETHPy150Open GoogleCloudPlatform/appengine-opencv-sudoku-python/cloudstorage/common.py/posix_time_to_http