Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 3 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/13/2020   10:13:58   (  -0.33,-128.33) (   0.50,-131.92)  408.99                80
 03/14/2020   09:52:34   (  -0.33,-128.32) (  -0.51,-127.39)  105.57                80
 03/15/2020   22:14:31   (   0.32,-128.32) (  -0.64,-132.70)  498.41                80
 03/16/2020   21:57:43   (   0.32,-128.31) (   0.37,-128.17)   16.26                36
 03/19/2020   10:01:29   (  -0.31,-128.23) (  -0.16,-128.90)   75.85                80
 03/20/2020   09:40:05   (  -0.31,-128.21) (  -1.17,-124.37)  438.11                80
 03/21/2020   22:02:01   (   0.30,-128.21) (  -0.03,-129.67)  166.55                80
 03/22/2020   21:45:57   (   0.30,-128.19) (   0.98,-125.14)  347.66                80
 03/24/2020   10:07:44   (  -0.29,-128.13) (   0.24,-130.40)  258.54                80
 03/25/2020   09:46:20   (  -0.30,-128.11) (  -0.77,-125.87)  255.08                80