Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 2 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/28/2021   10:13:51   (  -0.16,-128.21) (   0.66,-131.88)  418.55                80
 03/01/2021   09:52:27   (  -0.16,-128.22) (  -0.37,-127.35)   99.65                80
 03/02/2021   22:14:22   (   0.15,-128.28) (  -0.85,-132.65)  498.09                80
 03/03/2021   21:58:17   (   0.16,-128.30) (   0.18,-128.12)   20.43                80
 03/06/2021   10:01:20   (  -0.15,-128.31) (  -0.02,-128.85)   62.77                80
 03/07/2021   09:39:56   (  -0.15,-128.31) (  -1.05,-124.33)  454.51                80
 03/08/2021   22:01:51   (   0.14,-128.36) (  -0.17,-129.62)  144.86                80
 03/09/2021   21:45:47   (   0.14,-128.37) (   0.86,-125.10)  372.91                80
 03/11/2021   10:07:34   (  -0.12,-128.36) (   0.33,-130.36)  227.94                80
 03/12/2021   09:46:10   (  -0.13,-128.37) (  -0.70,-125.83)  289.13                80