Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 5 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/13/2023   20:54:57   (  -0.00,-104.72) (   0.52,-102.33)  271.69                80
 05/15/2023   09:17:16   (   0.00,-104.73) (   0.68,-107.71)  339.46                80
 05/16/2023   08:56:13   (   0.00,-104.73) (  -0.34,-103.25)  168.92                80
 05/17/2023   21:18:41   (  -0.00,-104.73) (  -0.89,-108.66)  448.00                80
 05/18/2023   21:02:57   (  -0.00,-104.74) (   0.13,-104.21)   60.71                80
 05/21/2023   09:06:52   (  -0.00,-104.75) (   0.10,-105.11)   41.64                80
 05/22/2023   08:45:49   (  -0.01,-104.75) (  -0.92,-100.66)  466.64                80
 05/23/2023   21:08:17   (   0.01,-104.75) (  -0.28,-106.07)  150.70                80
 05/24/2023   20:52:34   (   0.02,-104.75) (   0.75,-101.62)  357.97                80
 05/26/2023   09:14:52   (  -0.02,-104.77) (   0.51,-106.98)  252.08                80