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   09:46:20   (  -0.30,-128.07) (  -0.80,-125.87)  250.75                80
 03/26/2020   22:10:56   (   0.28,-128.06) (  -0.41,-131.17)  354.90                80
 03/27/2020   21:50:24   (   0.29,-128.03) (   0.60,-126.64)  158.21                28
 03/29/2020   10:13:59   (  -0.27,-127.95) (   0.61,-131.90)  450.06                80
 03/30/2020   09:52:35   (  -0.28,-127.92) (  -0.41,-127.37)   62.18                80
 04/01/2020   21:55:46   (   0.27,-127.85) (   0.21,-128.14)   33.17                80
 04/02/2020   21:39:42   (   0.27,-127.81) (   1.23,-123.61)  478.92                80
 04/04/2020   10:01:29   (  -0.25,-127.72) (  -0.02,-128.87)  130.55                80
 04/05/2020   09:40:05   (  -0.26,-127.68) (  -1.03,-124.34)  380.87                80
 04/06/2020   22:04:40   (   0.23,-127.64) (  -0.23,-129.63)  227.90                80