Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 10 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/25/2021   10:32:01   (   0.03,-137.22) (  -0.01,-136.96)   29.91                80
 10/27/2021   22:35:17   (  -0.02,-137.22) (  -0.13,-137.75)   59.77                80
 10/28/2021   22:19:13   (  -0.02,-137.22) (   0.87,-133.22)  455.87                80
 10/30/2021   10:38:24   (   0.02,-137.21) (   0.30,-138.49)  145.98                80
 10/31/2021   10:22:20   (   0.02,-137.21) (  -0.69,-133.96)  369.34                80
 11/01/2021   22:41:39   (  -0.01,-137.20) (  -0.49,-139.27)  237.20                80
 11/02/2021   22:25:35   (  -0.01,-137.19) (   0.51,-134.74)  277.91                80
 11/04/2021   10:44:45   (   0.01,-137.17) (   0.66,-140.02)  324.85                80
 11/05/2021   10:28:42   (   0.01,-137.16) (  -0.34,-135.49)  189.63                80
 11/06/2021   22:48:00   (  -0.01,-137.13) (  -0.84,-140.80)  418.64                80
 11/07/2021   22:31:57   (  -0.01,-137.11) (   0.16,-136.27)   95.24                80