Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 3 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/25/2020   09:46:19   (  -0.30,-128.07) (  -0.76,-125.86)  250.79                80
 03/26/2020   22:10:57   (   0.28,-128.06) (  -0.39,-131.18)  354.89                80
 03/27/2020   21:49:32   (   0.29,-128.03) (   0.63,-126.65)  158.27                80
 03/29/2020   10:13:58   (  -0.27,-127.95) (   0.64,-131.89)  450.03                80
 03/30/2020   09:52:34   (  -0.28,-127.92) (  -0.37,-127.36)   62.32                80
 04/01/2020   21:58:26   (   0.26,-127.85) (   0.18,-128.13)   33.10                80
 04/02/2020   21:39:41   (   0.27,-127.81) (   1.20,-123.60)  479.01                80
 04/04/2020   10:01:29   (  -0.25,-127.72) (   0.01,-128.87)  130.39                80
 04/05/2020   09:40:04   (  -0.26,-127.68) (  -1.01,-124.34)  381.00                80
 04/06/2020   22:04:40   (   0.23,-127.64) (  -0.19,-129.64)  227.75                80
 04/07/2020   21:43:16   (   0.25,-127.59) (   0.83,-125.11)  283.85                80