Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 3 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/01/2021   10:13:41   (  -0.05,-128.31) (   0.72,-131.83)  399.79                80
 04/02/2021   09:52:16   (  -0.06,-128.30) (  -0.26,-127.29)  114.59                80
 04/03/2021   22:14:12   (   0.04,-128.28) (  -0.90,-132.59)  490.51                80
 04/04/2021   21:58:06   (   0.04,-128.27) (   0.09,-128.06)   24.39                80
 04/07/2021   10:01:08   (  -0.03,-128.21) (   0.08,-128.79)   64.82                80
 04/08/2021   09:39:43   (  -0.04,-128.19) (  -0.91,-124.25)  449.27                80
 04/09/2021   22:01:38   (   0.03,-128.17) (  -0.31,-129.54)  156.67                80
 04/10/2021   21:45:34   (   0.04,-128.16) (   0.74,-125.02)  358.14                80
 04/12/2021   10:07:20   (  -0.02,-128.13) (   0.48,-130.27)  245.05                80
 04/13/2021   09:45:55   (  -0.03,-128.10) (  -0.57,-125.75)  268.67                80