Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 5 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/29/2020   22:10:49   (   0.01,-128.14) (  -0.65,-131.07)  334.49                80
 05/30/2020   21:49:24   (   0.03,-128.12) (   0.39,-126.54)  180.08                80
 06/01/2020   10:13:52   (  -0.00,-128.11) (   0.80,-131.81)  420.69                80
 06/02/2020   09:52:26   (  -0.02,-128.09) (  -0.18,-127.27)   93.18                80
 06/04/2020   21:58:17   (   0.01,-128.01) (   0.00,-128.03)    2.73                80
 06/07/2020   10:01:20   (  -0.01,-127.97) (   0.15,-128.77)   90.76                80
 06/08/2020   09:39:54   (  -0.02,-127.94) (  -0.83,-124.23)  422.43                80
 06/09/2020   22:04:30   (  -0.00,-127.87) (  -0.38,-129.53)  188.45                80
 06/10/2020   21:43:05   (   0.01,-127.85) (   0.67,-125.00)  325.13                80