Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 1 27.  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)
 01/27/2021   05:48:45   (  -0.08,-127.71) (   0.69,-124.38)  380.14                80
 01/28/2021   18:04:56   (   0.04,-127.69) (   0.30,-128.94)  142.31                80
 01/29/2021   17:46:56   (   0.07,-127.65) (  -0.76,-123.93)  423.54                80
 01/31/2021   06:03:16   (  -0.03,-127.55) (  -0.28,-128.53)  111.35                80
 02/01/2021   05:45:17   (  -0.06,-127.52) (   0.84,-123.53)  454.59                80
 02/02/2021   18:01:28   (   0.02,-127.49) (   0.15,-128.09)   68.31                80
 02/03/2021   17:43:27   (   0.05,-127.45) (  -0.92,-123.09)  496.98                80
 02/05/2021   05:59:49   (  -0.00,-127.35) (  -0.05,-127.70)   39.30                80
 02/07/2021   17:58:00   (  -0.02,-127.27) (  -0.02,-127.25)    2.00                80