Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 2 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/26/2021   21:52:03   (   0.17,-128.21) (   0.51,-126.61)  181.74                80
 02/28/2021   10:13:51   (  -0.16,-128.21) (   0.69,-131.87)  418.58                80
 03/01/2021   09:52:26   (  -0.16,-128.22) (  -0.34,-127.35)   99.57                80
 03/02/2021   22:14:22   (   0.15,-128.28) (  -0.82,-132.65)  498.43                80
 03/03/2021   21:58:18   (   0.16,-128.30) (   0.21,-128.12)   20.01                80
 03/06/2021   10:01:21   (  -0.15,-128.30) (  -0.05,-128.86)   63.16                80
 03/07/2021   09:39:55   (  -0.15,-128.31) (  -1.02,-124.32)  454.12                80
 03/08/2021   22:01:52   (   0.14,-128.35) (  -0.14,-129.63)  145.50                80
 03/09/2021   21:45:47   (   0.14,-128.36) (   0.90,-125.10)  372.21                80
 03/11/2021   10:07:34   (  -0.13,-128.36) (   0.30,-130.37)  228.56                80