Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 7 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/18/2022   22:27:41   (   0.27,-128.33) (  -0.04,-129.58)  143.69                80
 07/19/2022   22:11:57   (   0.26,-128.31) (   0.98,-125.13)  363.34                80
 07/21/2022   10:31:35   (  -0.29,-128.30) (   0.19,-130.51)  251.41                80
 07/22/2022   10:15:50   (  -0.28,-128.28) (  -0.77,-126.04)  254.95                80
 07/23/2022   22:35:37   (   0.32,-128.24) (  -0.41,-131.46)  367.56                80
 07/24/2022   22:19:51   (   0.31,-128.21) (   0.55,-126.99)  138.70                80
 07/26/2022   10:39:30   (  -0.34,-128.20) (   0.61,-132.38)  476.37                80
 07/27/2022   10:23:44   (  -0.33,-128.17) (  -0.36,-127.91)   29.43                80
 07/29/2022   22:25:06   (   0.35,-128.09) (   0.14,-128.86)   88.98                80
 07/30/2022   22:09:22   (   0.33,-128.06) (   1.17,-124.41)  416.82                80