Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 5 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/31/2021   22:22:47   (  -0.06,-128.40) (  -0.76,-131.58)  362.16                80
 06/01/2021   22:06:29   (  -0.06,-128.41) (   0.28,-126.99)  162.30                80
 06/03/2021   10:27:57   (   0.06,-128.50) (   0.88,-132.17)  417.84                80
 06/04/2021   10:06:19   (   0.07,-128.51) (  -0.16,-127.58)  106.04                80
 06/05/2021   22:27:55   (  -0.06,-128.44) (  -1.02,-132.79)  495.38                80
 06/06/2021   22:11:38   (  -0.06,-128.45) (   0.02,-128.20)   28.77                80
 06/09/2021   10:14:08   (   0.06,-128.54) (   0.09,-128.79)   28.48                80
 06/10/2021   09:52:29   (   0.06,-128.54) (  -0.89,-124.19)  494.60                80
 06/11/2021   22:14:06   (  -0.05,-128.46) (  -0.29,-129.40)  108.69                80
 06/12/2021   21:57:48   (  -0.05,-128.45) (   0.75,-124.82)  414.45                80