Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 1 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/23/2023   10:15:44   (   0.02,-124.15) (  -0.05,-123.91)   27.90                80
 01/24/2023   09:57:20   (   0.01,-123.00) (  -0.80,-119.41)  408.97                80
 01/25/2023   22:17:07   (  -0.01,-121.24) (  -0.80,-124.76)  401.15                80
 01/26/2023   21:58:42   (  -0.01,-120.09) (  -0.05,-120.26)   19.90                80
 01/27/2023   21:42:58   (  -0.01,-118.93) (   0.70,-115.77)  361.10                80
 01/29/2023   10:02:36   (   0.02,-117.15) (   0.91,-121.07)  447.02                80
 01/30/2023   09:44:12   (   0.02,-116.00) (   0.15,-116.58)   66.04                80
 01/31/2023   09:28:27   (   0.02,-114.84) (  -0.60,-112.08)  314.67                80
 02/01/2023   21:48:14   (  -0.02,-113.07) (  -1.01,-117.42)  495.98                80
 02/02/2023   21:29:49   (  -0.02,-111.92) (  -0.25,-112.93)  115.10                80
 02/03/2023   21:14:05   (  -0.02,-110.76) (   0.52,-108.43)  265.56                80