Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 6 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/20/2021   08:30:02   (  -0.04,-104.10) (   0.50,-106.56)  279.97                80
 06/21/2021   08:13:57   (  -0.03,-104.10) (  -0.48,-102.02)  236.68                80
 06/22/2021   20:33:16   (   0.06,-104.33) (  -0.61,-107.35)  343.76                80
 06/23/2021   20:17:12   (   0.05,-104.33) (   0.37,-102.81)  172.49                80
 06/25/2021   08:36:21   (  -0.08,-104.09) (   0.80,-108.09)  455.10                80
 06/26/2021   08:20:17   (  -0.07,-104.09) (  -0.17,-103.55)   61.36                80
 06/28/2021   20:20:52   (   0.08,-104.33) (   0.07,-104.34)    2.22                80
 07/01/2021   08:23:57   (  -0.10,-104.10) (   0.13,-105.08)  111.77                80
 07/02/2021   08:07:53   (  -0.08,-104.11) (  -0.90,-100.56)  405.27                80