Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 1 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/20/2023   22:11:50   (  -0.02,-127.09) (   0.90,-123.10)  455.34                80
 01/22/2023   10:31:28   (   0.02,-125.31) (   0.72,-128.40)  352.86                80
 01/23/2023   10:15:44   (   0.02,-124.15) (  -0.02,-123.90)   28.15                80
 01/24/2023   09:57:19   (   0.02,-123.00) (  -0.76,-119.41)  409.36                80
 01/25/2023   22:17:06   (  -0.02,-121.25) (  -0.83,-124.75)  400.39                80
 01/26/2023   21:58:42   (  -0.02,-120.09) (  -0.08,-120.26)   19.24                80
 01/27/2023   21:42:58   (  -0.02,-118.94) (   0.72,-115.77)  362.09                80
 01/29/2023   10:02:37   (   0.03,-117.16) (   0.89,-121.08)  446.00                80
 01/30/2023   09:44:12   (   0.03,-116.01) (   0.13,-116.58)   64.95                80
 01/31/2023   09:28:28   (   0.03,-114.85) (  -0.62,-112.09)  315.92                80
 02/01/2023   21:48:14   (  -0.03,-113.09) (  -1.00,-117.43)  494.33                80
 02/02/2023   21:29:50   (  -0.03,-111.93) (  -0.23,-112.93)  113.38                80