Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 1 20.  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)
 01/21/2021   06:10:13   (  -0.08,-127.90) (  -0.59,-130.21)  263.98                80
 01/22/2021   05:52:14   (  -0.11,-127.87) (   0.49,-125.21)  302.74                80
 01/23/2021   18:08:26   (   0.07,-127.85) (   0.51,-129.78)  220.30                80
 01/24/2021   17:50:26   (   0.09,-127.82) (  -0.57,-124.78)  345.73                80
 01/26/2021   06:06:49   (  -0.05,-127.74) (  -0.42,-129.39)  187.72                80
 01/27/2021   05:48:49   (  -0.08,-127.71) (   0.66,-124.39)  378.23                80
 01/28/2021   18:05:02   (   0.04,-127.68) (   0.34,-128.95)  145.67                80
 01/29/2021   17:47:02   (   0.07,-127.64) (  -0.73,-123.95)  419.77                80
 01/31/2021   06:03:24   (  -0.03,-127.55) (  -0.25,-128.56)  114.83                80
 02/01/2021   05:45:25   (  -0.06,-127.52) (   0.83,-123.56)  450.67                80
 02/02/2021   18:01:37   (   0.02,-127.48) (   0.17,-128.13)   73.70                80