Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 9 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/01/2021   18:23:46   (   0.13, -75.18) (   0.30, -74.36)   92.91                80
 09/04/2021   06:24:09   (  -0.14, -75.11) (  -0.13, -75.10)    2.41                80
 09/06/2021   18:27:22   (   0.15, -75.05) (  -0.06, -75.87)   94.15                80
 09/07/2021   18:11:19   (   0.15, -75.03) (   1.00, -71.35)  419.95                80
 09/09/2021   06:33:06   (  -0.15, -75.00) (   0.24, -76.61)  183.76                80
 09/10/2021   06:11:43   (  -0.15, -74.98) (  -0.82, -72.09)  330.46                80
 09/11/2021   18:33:39   (   0.15, -74.95) (  -0.41, -77.38)  277.64                80
 09/12/2021   18:17:35   (   0.15, -74.93) (   0.59, -72.85)  236.71                80
 09/14/2021   06:39:23   (  -0.16, -74.91) (   0.59, -78.12)  366.53                80