def to_latlon_for_days(dataframe):
    
    """For each day get list of typles with lat lon that is needed
    for api call 
    
    params:
        dataframe: dataframe with colums lat, lon, time
        
    returns:
        dict(key:date, value: list of tuples with latlon)
    
    """
    
    result = dict()
    for index, row in dataframe.iterrows():
        row_date = str(row['time'].date())
        result[row_date] = result[row_date] + [row['lat_lon']] if row_date in result else [row['lat_lon']]
    return result