Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 1 29.  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)
 01/29/2021   17:46:56   (   0.07,-127.65) (  -0.75,-123.93)  423.98                80
 01/31/2021   06:03:17   (  -0.03,-127.56) (  -0.23,-128.54)  110.98                80
 02/01/2021   05:45:16   (  -0.06,-127.52) (   0.83,-123.53)  455.07                80
 02/02/2021   18:01:28   (   0.02,-127.50) (   0.16,-128.09)   67.34                80
 02/03/2021   17:43:27   (   0.05,-127.46) (  -0.91,-123.09)  498.07                80
 02/05/2021   05:59:49   (  -0.00,-127.36) (  -0.06,-127.69)   38.28                80
 02/07/2021   17:57:59   (  -0.02,-127.29) (  -0.01,-127.25)    4.05                80
 02/10/2021   05:59:00   (   0.04,-127.12) (   0.11,-126.85)   30.68                80
 02/11/2021   18:15:11   (  -0.08,-127.09) (   0.89,-131.42)  492.54                80