Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 1 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)
 01/25/2020   10:10:58   (  -0.04,-128.36) (   0.70,-131.79)  389.22                80
 01/26/2020   09:54:54   (  -0.04,-128.35) (  -0.30,-127.25)  125.06                80
 01/27/2020   22:16:50   (   0.04,-128.32) (  -0.93,-132.55)  482.32                80
 01/28/2020   21:55:27   (   0.04,-128.30) (   0.13,-128.03)   31.75                80
 01/31/2020   09:58:30   (  -0.04,-128.25) (   0.07,-128.77)   59.64                80
 02/01/2020   09:42:26   (  -0.04,-128.22) (  -0.92,-124.24)  454.17                80
 02/02/2020   22:04:22   (   0.03,-128.19) (  -0.29,-129.54)  153.88                80
 02/03/2020   21:42:59   (   0.03,-128.16) (   0.76,-125.02)  359.39                80
 02/05/2020   10:04:47   (  -0.03,-128.11) (   0.43,-130.29)  247.41                80
 02/06/2020   09:48:43   (  -0.02,-128.08) (  -0.57,-125.76)  265.51                80