Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 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)
 03/21/2020   22:02:01   (   0.30,-128.19) (  -0.06,-129.66)  168.22                80
 03/22/2020   21:45:56   (   0.30,-128.17) (   0.96,-125.13)  345.56                80
 03/24/2020   10:07:44   (  -0.29,-128.10) (   0.26,-130.39)  262.42                80
 03/25/2020   09:46:20   (  -0.30,-128.07) (  -0.82,-125.88)  250.76                80
 03/26/2020   22:10:56   (   0.28,-128.06) (  -0.39,-131.18)  354.67                80
 03/27/2020   21:49:32   (   0.29,-128.03) (   0.62,-126.64)  158.52                80
 03/29/2020   10:13:59   (  -0.27,-127.95) (   0.59,-131.91)  449.87                80
 03/30/2020   09:52:35   (  -0.28,-127.92) (  -0.43,-127.38)   62.48                80
 04/01/2020   21:58:26   (   0.26,-127.85) (   0.18,-128.13)   32.66                80
 04/02/2020   21:39:41   (   0.27,-127.82) (   1.19,-123.60)  479.54                80
 04/04/2020   10:01:29   (  -0.25,-127.73) (   0.02,-128.87)  129.99                80