Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 1 19.  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)
 01/19/2021   17:53:51   (   0.12,-127.96) (  -0.43,-125.61)  267.79                80
 01/21/2021   06:10:13   (  -0.08,-127.90) (  -0.62,-130.21)  263.91                80
 01/22/2021   05:52:13   (  -0.11,-127.87) (   0.46,-125.21)  302.87                80
 01/23/2021   18:08:26   (   0.07,-127.85) (   0.48,-129.79)  220.25                80
 01/24/2021   17:50:27   (   0.09,-127.82) (  -0.60,-124.79)  345.80                80
 01/26/2021   06:06:48   (  -0.05,-127.74) (  -0.45,-129.38)  187.52                80
 01/27/2021   05:48:50   (  -0.08,-127.71) (   0.69,-124.40)  378.51                80
 01/28/2021   18:05:02   (   0.04,-127.68) (   0.31,-128.96)  145.46                80
 01/29/2021   17:47:03   (   0.07,-127.64) (  -0.77,-123.96)  420.01                80
 01/31/2021   06:03:24   (  -0.03,-127.56) (  -0.27,-128.56)  114.46                80
 02/01/2021   05:45:24   (  -0.06,-127.52) (   0.81,-123.56)  451.09                80