Sorry, Nodda, I made an editing error. Here are the corrected charts.
Here's the chart that shows the 645 sync (with 821).
09/29/2020,470,821 | 11/08/2010,780,821 | 05/02/2006,414,821
09/30/2020,398,551 | 11/09/2010,397,756 | 05/03/2006,380,742
10/01/2020,761,596 | 11/10/2010,688,647 | 05/04/2006,032,201
10/02/2020,167,560 | 11/11/2010,533,966 | 05/05/2006,604,123
10/03/2020,406,190 | 11/12/2010,033,292 | 05/06/2006,195,854
10/04/2020,539,972 | 11/13/2010,353,923 | 05/08/2006,939,763
10/05/2020,611,820 | 11/14/2010,689,120 | 05/09/2006,356,843
10/06/2020,382,435 | 11/15/2010,311,854 | 05/10/2006,869,525
10/07/2020,934,230 | 11/16/2010,183,578 | 05/11/2006,072,613
10/08/2020,172,093 | 11/17/2010,929,733 | 05/12/2006,958,260
10/09/2020,501,542 | 11/18/2010,748,710 | 05/13/2006,927,571
10/10/2020,572,382 | 11/19/2010,161,914 | 05/15/2006,268,869
10/11/2020,934,142 | 11/20/2010,221,886 | 05/16/2006,194,037
10/12/2020,242,805 | 11/21/2010,717,837 | 05/17/2006,968,731
10/13/2020,408,790 | 11/22/2010,475,632 | 05/18/2006,603,956
10/14/2020,406,114 | 11/23/2010,991,149 | 05/19/2006,189,109
10/15/2020,443,928 | 11/24/2010,327,427 | 05/20/2006,752,825
10/16/2020,048,231 | 11/25/2010,416,149 | 05/22/2006,044,249
10/17/2020,205,227 | 11/26/2010,096,985 | 05/23/2006,564,843
10/18/2020,140,209 | 11/27/2010,981,173 | 05/24/2006,290,762
10/19/2020,322,689 | 11/28/2010,681,012 | 05/25/2006,837,392
10/20/2020,921,620 | 11/29/2010,878,550 | 05/26/2006,431,849
10/21/2020,572,554 | 11/30/2010,099,322 | 05/27/2006,148,848
10/22/2020,099,297 | 12/01/2010,975,657 | 05/29/2006,566,887
10/23/2020,043,793 | 12/02/2010,119,203 | 05/30/2006,321,705
10/24/2020,676,543 | 12/03/2010,995,359 | 05/31/2006,246,853
10/25/2020,092,761 | 12/04/2010,714,706 | 06/01/2006,129,600
10/26/2020,749,567 | 12/05/2010,904,972 | 06/02/2006,406,913
10/27/2020,394,477 | 12/06/2010,952,029 | 06/03/2006,311,996
10/28/2020,976,503 | 12/07/2010,418,873 | 06/05/2006,775,513
10/29/2020,391,265 | 12/08/2010,878,459 | 06/06/2006,878,450
10/30/2020,095,593 | 12/09/2010,382,631 | 06/07/2006,827,031
10/31/2020,???,??? | 12/10/2010,645,802 | 06/08/2006,645,158
It's not bad, but pales in comparison with this 529 sync chart for today:
10/10/2020,572,382 | 10/22/2013,882,382 | 08/18/2010,382,070 | 03/06/2008,382,415 -382
10/11/2020,934,142 | 10/23/2013,904,100 | 08/19/2010,419,868 | 03/07/2008,252,854
10/12/2020,242,805 | 10/24/2013,963,822 | 08/20/2010,723,877 | 03/08/2008,645,057
10/13/2020,408,790 | 10/25/2013,482,083 | 08/21/2010,529,724 | 03/09/2008,473,317
10/14/2020,406,114 | 10/26/2013,414,096 | 08/22/2010,121,314 | 03/10/2008,493,299
10/15/2020,443,928 | 10/27/2013,626,740 | 08/23/2010,545,031 | 03/11/2008,560,793
10/16/2020,048,231 | 10/28/2013,189,647 | 08/24/2010,828,782 | 03/12/2008,236,529 -529
10/17/2020,205,227 | 10/29/2013,413,071 | 08/25/2010,184,225 | 03/13/2008,105,455
10/18/2020,140,209 | 10/30/2013,175,271 | 08/26/2010,553,881 | 03/14/2008,617,510
10/19/2020,322,689 | 10/31/2013,373,664 | 08/27/2010,993,703 | 03/15/2008,231,295
10/20/2020,921,620 | 11/01/2013,036,157 | 08/28/2010,528,715 | 03/16/2008,482,268
10/21/2020,572,554 | 11/02/2013,500,057 | 08/29/2010,073,287 | 03/17/2008,613,410
10/22/2020,099,297 | 11/03/2013,108,567 | 08/30/2010,033,966 | 03/18/2008,325,686
10/23/2020,043,793 | 11/04/2013,407,354 | 08/31/2010,140,892 | 03/19/2008,392,770
10/24/2020,676,543 | 11/05/2013,278,608 | 09/01/2010,524,206 | 03/20/2008,592,629
10/25/2020,092,761 | 11/06/2013,385,695 | 09/02/2010,989,372 | 03/21/2008,715,348
10/26/2020,749,567 | 11/07/2013,909,025 | 09/03/2010,296,314 | 03/22/2008,945,375
10/27/2020,394,477 | 11/08/2013,229,402 | 09/04/2010,494,888 | 03/23/2008,319,707
10/28/2020,976,503 | 11/09/2013,253,268 | 09/05/2010,200,966 | 03/24/2008,723,132
10/29/2020,391,265 | 11/10/2013,287,802 | 09/06/2010,197,735 | 03/25/2008,286,407
10/30/2020,095,593 | 11/11/2013,464,654 | 09/07/2010,521,359 | 03/26/2008,842,363
10/31/2020,???,??? | 11/12/2013,986,529 | 09/08/2010,529,083 | 03/27/2008,529,269 -529
And then the icing on the cake - 05/02/2008,382,529