Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 22.  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)
 04/23/2021   06:08:47   (  -0.07,-127.70) (  -0.42,-129.30)  181.62                80
 04/24/2021   05:45:29   (  -0.08,-127.66) (   0.69,-124.30)  383.09                80
 04/25/2021   18:04:22   (   0.07,-127.69) (   0.32,-128.87)  134.23                80
 04/26/2021   17:46:23   (   0.08,-127.65) (  -0.79,-123.88)  430.61                80
 04/28/2021   06:05:25   (  -0.07,-127.50) (  -0.28,-128.47)  109.70                80
 04/29/2021   05:42:06   (  -0.07,-127.45) (   0.83,-123.47)  454.09                80
 04/30/2021   18:00:59   (   0.06,-127.46) (   0.17,-128.04)   65.14                80
 05/01/2021   17:43:01   (   0.06,-127.42) (  -0.94,-123.05)  498.81                80
 05/03/2021   06:02:02   (  -0.05,-127.27) (  -0.13,-127.63)   42.01                80
 05/05/2021   17:57:36   (   0.05,-127.21) (   0.07,-127.20)    3.30                80