Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 7 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/21/2022   10:31:35   (  -0.29,-128.30) (   0.18,-130.51)  251.81                80
 07/22/2022   10:15:50   (  -0.28,-128.28) (  -0.79,-126.04)  254.45                80
 07/23/2022   22:35:37   (   0.32,-128.23) (  -0.40,-131.46)  367.88                80
 07/24/2022   22:19:52   (   0.31,-128.21) (   0.57,-126.99)  138.25                80
 07/26/2022   10:39:30   (  -0.34,-128.19) (   0.60,-132.38)  477.32                80
 07/27/2022   10:23:45   (  -0.33,-128.16) (  -0.37,-127.91)   28.26                80
 07/29/2022   22:25:06   (   0.35,-128.08) (   0.15,-128.86)   89.94                80
 07/30/2022   22:09:22   (   0.33,-128.05) (   1.18,-124.41)  415.71                80
 08/01/2022   10:28:59   (  -0.36,-128.03) (   0.03,-129.78)  200.03                80
 08/02/2022   10:13:14   (  -0.35,-128.00) (  -0.94,-125.32)  305.13                80