Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 11 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/21/2021   22:23:34   (  -0.05,-128.36) (  -0.51,-130.45)  237.40                80
 11/22/2021   22:07:51   (  -0.06,-128.35) (   0.46,-126.00)  267.82                80
 11/24/2021   10:27:34   (   0.03,-128.32) (   0.75,-131.39)  351.39                80
 11/25/2021   10:11:52   (   0.04,-128.30) (  -0.25,-126.95)  153.16                80
 11/26/2021   22:31:45   (  -0.01,-128.27) (  -0.93,-132.40)  470.67                80
 11/27/2021   22:16:04   (  -0.02,-128.25) (   0.05,-127.95)   33.62                80
 11/30/2021   10:17:27   (   0.01,-128.19) (   0.16,-128.92)   82.67                80
 12/01/2021   10:01:45   (   0.03,-128.16) (  -0.78,-124.47)  420.82                80
 12/02/2021   22:21:40   (  -0.00,-128.12) (  -0.43,-129.91)  205.05                80
 12/03/2021   22:06:00   (  -0.02,-128.09) (   0.60,-125.48)  297.90                80
 12/05/2021   10:25:44   (  -0.01,-128.04) (   0.65,-130.88)  324.32                80