Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 4 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 04/14/2021   18:32:30   (   0.04,-137.20) (  -0.24,-135.97)  140.55                80
 04/16/2021   06:54:09   (  -0.04,-137.19) (  -0.78,-140.57)  384.07                80
 04/17/2021   06:30:48   (  -0.04,-137.19) (   0.31,-135.57)  184.60                80
 04/18/2021   18:49:40   (   0.03,-137.19) (   0.68,-140.13)  335.54                80
 04/19/2021   18:31:39   (   0.03,-137.18) (  -0.40,-135.13)  232.72                80
 04/21/2021   06:50:38   (  -0.03,-137.15) (  -0.62,-139.72)  293.40                80
 04/22/2021   06:27:19   (  -0.03,-137.14) (   0.52,-134.74)  274.49                80
 04/23/2021   18:46:09   (   0.02,-137.13) (   0.52,-139.29)  246.69                80
 04/24/2021   18:28:10   (   0.02,-137.11) (  -0.63,-134.30)  321.00                80
 04/26/2021   06:44:29   (  -0.02,-137.08) (  -0.40,-138.90)  206.08                80
 04/27/2021   06:26:29   (  -0.02,-137.06) (   0.69,-133.89)  361.14                80