Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 9 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/24/2020   10:06:09   (  -0.12,-128.38) (  -0.15,-128.29)   11.20                80
 09/26/2020   22:08:51   (   0.13,-128.37) (  -0.00,-128.93)   63.70                80
 09/27/2020   21:47:14   (   0.13,-128.38) (   1.02,-124.35)  459.48                80
 09/29/2020   10:08:44   (  -0.13,-128.44) (   0.14,-129.54)  125.77                80
 09/30/2020   09:52:28   (  -0.13,-128.45) (  -0.94,-124.97)  397.69                80
 10/01/2020   22:14:06   (   0.13,-128.43) (  -0.24,-130.19)  200.37                80
 10/02/2020   21:52:30   (   0.13,-128.44) (   0.79,-125.61)  322.63                80
 10/04/2020   10:13:59   (  -0.13,-128.49) (   0.37,-130.80)  263.53                80
 10/05/2020   09:57:43   (  -0.13,-128.49) (  -0.65,-126.22)  259.34                80