Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 5 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/22/2021   21:58:11   (  -0.07,-128.28) (  -0.02,-128.03)   28.12                80
 05/25/2021   10:01:17   (   0.07,-128.39) (   0.13,-128.79)   44.24                80
 05/26/2021   09:39:53   (   0.07,-128.40) (  -0.85,-124.25)  473.22                80
 05/27/2021   22:01:50   (  -0.07,-128.35) (  -0.35,-129.55)  137.07                80
 05/28/2021   21:45:47   (  -0.07,-128.37) (   0.69,-125.03)  380.58                80
 05/30/2021   10:07:36   (   0.07,-128.46) (   0.46,-130.31)  210.42                80
 05/31/2021   09:46:11   (   0.07,-128.47) (  -0.52,-125.77)  306.67                80
 06/01/2021   22:08:09   (  -0.07,-128.40) (  -0.67,-131.08)  304.80                80
 06/02/2021   21:52:05   (  -0.08,-128.42) (   0.37,-126.56)  212.82                80
 06/04/2021   10:13:53   (   0.07,-128.52) (   0.84,-131.82)  377.50                80