Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 2 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/23/2021   10:07:37   (  -0.17,-128.09) (   0.32,-130.37)  259.37                80
 02/24/2021   09:46:13   (  -0.17,-128.11) (  -0.71,-125.84)  259.24                80
 02/25/2021   22:08:08   (   0.16,-128.18) (  -0.52,-131.14)  337.76                80
 02/26/2021   21:52:03   (   0.17,-128.20) (   0.52,-126.61)  181.09                80
 02/28/2021   10:13:51   (  -0.16,-128.20) (   0.69,-131.87)  419.05                80
 03/01/2021   09:52:26   (  -0.16,-128.22) (  -0.34,-127.35)   98.96                80
 03/02/2021   22:14:23   (   0.15,-128.27) (  -0.82,-132.65)  499.68                80
 03/03/2021   21:58:18   (   0.16,-128.28) (   0.21,-128.13)   18.64                80
 03/06/2021   10:01:21   (  -0.15,-128.29) (  -0.04,-128.86)   64.56                80
 03/07/2021   09:39:55   (  -0.15,-128.30) (  -1.02,-124.32)  452.57                80
 03/08/2021   22:01:52   (   0.14,-128.33) (  -0.14,-129.63)  147.68                80