Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 1 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 01/12/2021   05:59:01   (  -0.15,-128.10) (   0.11,-126.86)  141.56                80
 01/13/2021   18:15:14   (   0.12,-128.09) (   0.89,-131.42)  380.83                80
 01/14/2021   17:57:15   (   0.14,-128.07) (  -0.24,-126.43)  186.48                80
 01/16/2021   06:13:36   (  -0.11,-128.02) (  -0.81,-131.03)  343.40                80
 01/17/2021   05:55:38   (  -0.14,-128.00) (   0.33,-126.04)  224.24                80
 01/18/2021   18:11:50   (   0.10,-127.99) (   0.67,-130.61)  297.92                80
 01/19/2021   17:53:51   (   0.12,-127.97) (  -0.40,-125.61)  269.21                80
 01/21/2021   06:10:13   (  -0.08,-127.92) (  -0.59,-130.22)  261.62                80
 01/22/2021   05:52:14   (  -0.11,-127.90) (   0.49,-125.21)  305.51                80
 01/23/2021   18:08:26   (   0.07,-127.88) (   0.51,-129.78)  217.33                80
 01/24/2021   17:50:27   (   0.09,-127.85) (  -0.57,-124.78)  349.08                80