Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 12 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/18/2021   08:40:16   (   0.01,-104.51) (   0.81,-108.21)  420.58                80
 12/19/2021   08:18:50   (   0.02,-104.51) (  -0.16,-103.67)   96.06                80
 12/21/2021   20:21:58   (  -0.02,-104.19) (  -0.07,-104.42)   25.96                80
 12/22/2021   20:05:52   (  -0.02,-104.20) (   0.97, -99.89)  491.57                80
 12/24/2021   08:27:40   (   0.01,-104.52) (   0.12,-105.17)   73.24                80
 12/25/2021   08:06:13   (   0.02,-104.52) (  -0.85,-100.63)  443.50                80
 12/26/2021   20:28:07   (   0.00,-104.19) (  -0.41,-105.91)  196.56                80
 12/27/2021   20:12:01   (  -0.00,-104.20) (   0.63,-101.38)  321.00                80
 12/29/2021   08:33:48   (  -0.01,-104.54) (   0.46,-106.66)  242.20                80
 12/30/2021   08:12:22   (   0.00,-104.53) (  -0.52,-102.12)  274.51                80