Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 3 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/21/2020   22:02:02   (   0.30,-128.19) (  -0.01,-129.67)  168.16                80
 03/22/2020   21:45:57   (   0.30,-128.17) (   1.00,-125.14)  345.67                80
 03/24/2020   10:07:44   (  -0.29,-128.10) (   0.21,-130.40)  262.21                80
 03/25/2020   09:46:20   (  -0.30,-128.07) (  -0.80,-125.87)  251.01                80
 03/26/2020   22:10:56   (   0.28,-128.06) (  -0.40,-131.17)  354.29                80
 03/27/2020   21:51:26   (   0.29,-128.03) (   0.61,-126.64)  158.95                34
 03/29/2020   10:13:59   (  -0.27,-127.96) (   0.60,-131.90)  449.33                80
 03/30/2020   09:52:35   (  -0.28,-127.92) (  -0.41,-127.37)   63.04                80
 04/01/2020   21:55:46   (   0.26,-127.86) (   0.22,-128.14)   31.90                80
 04/02/2020   21:39:42   (   0.27,-127.82) (   1.24,-123.61)  480.37                80