Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 11 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/30/2021   10:17:18   (   0.01,-128.20) (   0.17,-128.88)   77.43                80
 12/01/2021   10:01:35   (   0.03,-128.18) (  -0.82,-124.43)  427.16                80
 12/02/2021   22:21:27   (  -0.00,-128.14) (  -0.39,-129.86)  196.06                80
 12/03/2021   22:05:44   (  -0.02,-128.12) (   0.60,-125.42)  308.14                80
 12/05/2021   10:25:25   (  -0.01,-128.07) (   0.59,-130.81)  312.66                80
 12/06/2021   10:09:42   (   0.01,-128.03) (  -0.34,-126.35)  190.93                80
 12/07/2021   22:29:33   (   0.02,-127.99) (  -0.86,-131.79)  433.92                80
 12/08/2021   22:13:51   (   0.01,-127.95) (   0.14,-127.34)   69.68                80
 12/11/2021   10:15:10   (  -0.02,-127.87) (   0.06,-128.29)   47.67                80
 12/12/2021   09:59:27   (  -0.01,-127.84) (  -0.93,-123.84)  455.81                80