Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 1 24.  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)
 01/24/2021   17:50:24   (   0.09,-127.82) (  -0.58,-124.77)  347.31                80
 01/26/2021   06:06:45   (  -0.05,-127.74) (  -0.40,-129.38)  186.16                80
 01/27/2021   05:48:44   (  -0.08,-127.71) (   0.66,-124.37)  380.10                80
 01/28/2021   18:04:56   (   0.04,-127.68) (   0.33,-128.93)  142.85                80
 01/29/2021   17:46:56   (   0.07,-127.64) (  -0.79,-123.94)  422.91                80
 01/31/2021   06:03:17   (  -0.03,-127.55) (  -0.25,-128.53)  111.69                80
 02/01/2021   05:45:16   (  -0.06,-127.51) (   0.81,-123.52)  454.11                80
 02/02/2021   18:01:27   (   0.02,-127.48) (   0.18,-128.09)   69.39                80
 02/03/2021   17:43:28   (   0.05,-127.44) (  -0.94,-123.09)  495.87                80
 02/05/2021   05:59:48   (  -0.00,-127.34) (  -0.09,-127.69)   40.08                80