def METHOD_NAME(start, end):
    # convert to datetimes
    start = from_gps(to_gps(start))
    end = from_gps(to_gps(end))
    # loop over months
    dbs = []
    d = start
    dt = relativedelta(months=1)
    while d < end:
        dbs.append('geo%s' % d.strftime('%Y%m'))
        d += dt
    return dbs