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,-127.89) (  -0.61,-130.21)  264.06                80
 01/22/2021   05:52:13   (  -0.11,-127.87) (   0.47,-125.21)  302.64                80
 01/23/2021   18:08:27   (   0.07,-127.85) (   0.47,-129.79)  220.33                80
 01/24/2021   17:50:27   (   0.09,-127.82) (  -0.60,-124.79)  345.70                80
 01/26/2021   06:06:48   (  -0.05,-127.74) (  -0.44,-129.38)  187.90                80
 01/27/2021   05:48:49   (  -0.08,-127.71) (   0.64,-124.38)  378.05                80
 01/28/2021   18:05:02   (   0.04,-127.68) (   0.30,-128.96)  145.79                80
 01/29/2021   17:47:03   (   0.07,-127.64) (  -0.77,-123.96)  419.65                80
 01/31/2021   06:03:24   (  -0.03,-127.55) (  -0.27,-128.56)  115.09                80
 02/01/2021   05:45:25   (  -0.06,-127.51) (   0.81,-123.56)  450.39                80
 02/02/2021   18:01:37   (   0.02,-127.48) (   0.19,-128.13)   73.96                80