Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 1 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/19/2023   22:30:20   (  -0.03,-130.04) (   0.50,-127.67)  270.03                80
 01/21/2023   10:50:02   (   0.03,-129.41) (   0.88,-133.03)  413.68                80
 01/22/2023   10:34:21   (   0.03,-128.99) (  -0.03,-128.57)   47.48                80
 01/24/2023   22:35:51   (  -0.04,-127.93) (  -0.42,-129.51)  180.98                80
 01/25/2023   22:20:09   (  -0.04,-127.51) (   0.50,-125.06)  279.95                80
 01/27/2023   10:39:52   (   0.04,-126.88) (   0.82,-130.43)  404.32                80
 01/28/2023   10:24:10   (   0.04,-126.46) (  -0.05,-125.96)   56.66                80
 01/30/2023   22:25:39   (  -0.05,-125.39) (  -0.42,-126.89)  172.00                80
 01/31/2023   22:09:57   (  -0.05,-124.97) (   0.52,-122.44)  288.43                80