Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2022 3 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/22/2022   21:58:53   (  -0.09,-128.21) (  -0.08,-128.06)   16.28                80
 03/25/2022   10:01:57   (   0.09,-128.26) (   0.19,-128.81)   62.70                80
 03/26/2022   09:40:32   (   0.10,-128.28) (  -0.78,-124.27)  455.98                80
 03/27/2022   22:02:28   (  -0.10,-128.32) (  -0.39,-129.58)  144.00                80
 03/28/2022   21:46:23   (  -0.10,-128.34) (   0.64,-125.05)  374.75                80
 03/30/2022   10:08:11   (   0.11,-128.36) (   0.56,-130.32)  223.07                80
 03/31/2022   09:46:46   (   0.11,-128.38) (  -0.48,-125.79)  295.50                80
 04/01/2022   22:08:43   (  -0.11,-128.42) (  -0.69,-131.10)  304.87                80
 04/02/2022   21:52:37   (  -0.11,-128.44) (   0.28,-126.56)  213.72                80