Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 4 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/07/2021   06:43:33   (  -0.11,-128.17) (   0.76,-124.11)  461.81                80
 04/07/2021   19:04:49   (   0.10,-128.24) (   0.29,-129.27)  116.63                80
 04/09/2021   18:55:16   (   0.10,-128.20) (  -0.30,-126.31)  215.06                80
 04/10/2021   07:16:40   (  -0.09,-128.11) (  -0.80,-131.50)  385.41                80
 04/12/2021   07:04:27   (  -0.10,-128.07) (  -0.21,-128.54)   54.12                80
 04/14/2021   06:49:35   (  -0.10,-128.02) (   0.45,-125.59)  276.67                80
 04/14/2021   19:10:50   (   0.09,-128.08) (   0.66,-130.75)  303.11                80
 04/16/2021   19:01:17   (   0.09,-128.03) (   0.07,-127.79)   27.03                80
 04/18/2021   18:49:05   (   0.08,-127.97) (  -0.60,-124.84)  356.16                80
 04/19/2021   07:10:28   (  -0.08,-127.88) (  -0.56,-130.02)  244.01                80