Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 11 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/22/2019   10:11:38   (   0.04,-128.50) (   0.77,-131.88)  384.96                80
 11/23/2019   09:55:33   (   0.06,-128.49) (  -0.22,-127.34)  130.99                80
 11/24/2019   22:14:48   (  -0.03,-128.44) (  -0.99,-132.64)  479.43                80
 11/25/2019   21:58:43   (  -0.05,-128.43) (   0.01,-128.11)   36.31                80
 11/28/2019   09:59:05   (   0.04,-128.43) (   0.15,-128.84)   47.36                80
 11/29/2019   09:42:59   (   0.05,-128.42) (  -0.85,-124.31)  467.83                80
 11/30/2019   22:02:15   (  -0.03,-128.36) (  -0.30,-129.62)  143.67                80
 12/01/2019   21:46:10   (  -0.04,-128.34) (   0.70,-125.08)  371.41                80
 12/03/2019   10:05:17   (   0.02,-128.35) (   0.45,-130.36)  228.24                80
 12/04/2019   09:49:12   (   0.03,-128.34) (  -0.55,-125.82)  286.65                80