Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 4 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/15/2020   22:15:57   (   0.18,-127.90) (  -0.53,-131.12)  366.07                80
 04/16/2020   21:54:21   (   0.20,-127.93) (   0.52,-126.55)  158.71                80
 04/18/2020   10:18:31   (  -0.17,-127.98) (   0.68,-131.73)  428.14                80
 04/19/2020   09:56:56   (  -0.18,-128.00) (  -0.37,-127.16)   96.06                80
 04/20/2020   22:21:14   (   0.16,-128.04) (  -0.80,-132.39)  495.13                80
 04/21/2020   21:59:39   (   0.17,-128.07) (   0.25,-127.82)   29.34                80
 04/24/2020   10:04:54   (  -0.16,-128.13) (  -0.11,-128.43)   34.01                80
 04/25/2020   09:43:18   (  -0.18,-128.15) (  -1.16,-123.86)  489.42                80
 04/26/2020   22:07:36   (   0.15,-128.17) (  -0.08,-129.08)  103.41                80
 04/27/2020   21:46:00   (   0.16,-128.19) (   0.98,-124.50)  420.00                80