Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 9 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)
 09/18/2023   19:08:44   (   0.32, 110.02) (   1.13, 106.35)  418.35                80
 09/19/2023   18:47:42   (   0.33, 108.98) (  -0.04, 110.77)  203.31                80
 09/21/2023   07:12:57   (  -0.31, 107.36) (  -0.78, 105.28)  236.80                80
 09/22/2023   06:51:56   (  -0.33, 106.30) (   0.46, 109.69)  386.04                80
 09/23/2023   19:17:00   (   0.30, 104.71) (   0.40, 104.24)   53.32                80
 09/25/2023   07:39:34   (  -0.27, 103.09) (  -1.26,  98.76)  494.10                80
 09/26/2023   07:18:33   (  -0.29, 102.03) (  -0.02, 103.17)  129.51                80
 09/27/2023   19:43:38   (   0.26, 100.41) (   0.87,  97.72)  307.22                80
 09/28/2023   19:22:37   (   0.28,  99.36) (  -0.37, 102.13)  316.15                80
 09/30/2023   07:47:49   (  -0.26,  97.72) (  -0.52,  96.65)  122.58                80