Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 1 18.  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)
 01/18/2021   18:11:50   (   0.10,-127.98) (   0.68,-130.60)  299.08                80
 01/19/2021   17:53:51   (   0.12,-127.96) (  -0.39,-125.60)  267.74                80
 01/21/2021   06:10:13   (  -0.08,-127.90) (  -0.60,-130.21)  263.77                80
 01/22/2021   05:52:13   (  -0.11,-127.87) (   0.48,-125.21)  303.03                80
 01/23/2021   18:08:26   (   0.07,-127.85) (   0.52,-129.78)  220.11                80
 01/24/2021   17:50:26   (   0.09,-127.82) (  -0.56,-124.78)  346.00                80
 01/26/2021   06:06:49   (  -0.05,-127.75) (  -0.43,-129.39)  187.15                80
 01/27/2021   05:48:49   (  -0.08,-127.71) (   0.65,-124.39)  378.88                80
 01/28/2021   18:05:01   (   0.04,-127.68) (   0.35,-128.95)  145.11                80
 01/29/2021   17:47:02   (   0.07,-127.65) (  -0.73,-123.95)  420.41                80
 01/31/2021   06:03:24   (  -0.03,-127.56) (  -0.25,-128.56)  113.90                80