Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 8 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/23/2022   10:26:12   (   0.39,-128.04) (   0.44,-128.14)   11.64                80
 08/24/2022   10:05:07   (   0.39,-128.03) (  -0.60,-123.69)  495.31                80
 08/25/2022   22:27:34   (  -0.39,-127.99) (  -0.64,-129.09)  126.17                80
 08/26/2022   22:11:48   (  -0.38,-127.98) (   0.34,-124.63)  381.11                80
 08/28/2022   10:34:06   (   0.38,-127.99) (   0.84,-130.00)  229.55                80
 08/29/2022   10:13:00   (   0.38,-127.97) (  -0.14,-125.54)  276.92                80
 08/30/2022   22:35:26   (  -0.38,-127.91) (  -1.08,-130.95)  346.45                80
 08/31/2022   22:19:42   (  -0.38,-127.90) (  -0.04,-126.50)  160.39                80
 09/02/2022   10:41:58   (   0.37,-127.91) (   1.29,-131.86)  450.34                80
 09/03/2022   10:20:54   (   0.37,-127.89) (   0.24,-127.41)   55.27                80