Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 1 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/19/2021   18:56:11   (   0.01,-127.96) (  -0.34,-126.32)  186.35                80
 01/20/2021   07:14:55   (   0.02,-127.92) (  -0.76,-131.52)  409.79                80
 01/22/2021   07:02:43   (   0.02,-127.86) (  -0.11,-128.56)   79.11                80
 01/24/2021   06:53:10   (   0.02,-127.81) (   0.48,-125.60)  250.82                80
 01/24/2021   19:11:45   (  -0.06,-127.82) (   0.57,-130.76)  334.39                80
 01/26/2021   18:59:32   (  -0.05,-127.76) (  -0.03,-127.80)    5.43                80
 01/28/2021   18:50:00   (  -0.04,-127.68) (  -0.63,-124.84)  323.33                80
 01/29/2021   07:08:44   (   0.08,-127.63) (  -0.41,-130.04)  274.02                80
 01/31/2021   06:59:11   (   0.08,-127.55) (   0.19,-127.08)   54.18                80