Simultaneous Nadir Overpasses (SNOs) between GOES-16 and METOP-B
TLE Epoch: 2017 12 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 12/20/2017   14:24:32   (   0.01, -75.19) (  -0.26, -73.96)  139.42                80
 12/22/2017   02:43:32   (  -0.02, -75.19) (  -0.80, -78.55)  384.22                80
 12/23/2017   02:25:33   (  -0.03, -75.19) (   0.36, -73.57)  185.41                80
 12/24/2017   14:44:25   (   0.03, -75.20) (   0.67, -78.13)  333.30                80
 12/25/2017   14:21:05   (   0.04, -75.20) (  -0.43, -73.13)  236.18                80
 12/27/2017   02:40:06   (  -0.04, -75.21) (  -0.62, -77.72)  287.09                80
 12/28/2017   02:22:07   (  -0.04, -75.22) (   0.54, -72.74)  282.96                80
 12/29/2017   14:40:58   (   0.03, -75.24) (   0.49, -77.30)  234.90                80
 12/30/2017   14:17:39   (   0.03, -75.24) (  -0.62, -72.30)  334.82                80
 01/01/2018   02:36:40   (  -0.03, -75.25) (  -0.37, -76.91)  188.47                80
 01/02/2018   02:18:41   (  -0.03, -75.26) (   0.73, -71.91)  381.89                80