Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 1 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/12/2021   18:50:08   (   0.06,-128.11) (  -0.62,-124.84)  371.71                80
 01/13/2021   07:08:53   (  -0.03,-128.08) (  -0.42,-130.04)  223.20                80
 01/15/2021   06:59:20   (  -0.03,-128.04) (   0.16,-127.08)  109.00                80
 01/15/2021   19:17:56   (  -0.00,-128.05) (   0.89,-132.24)  476.21                80
 01/17/2021   06:47:08   (  -0.04,-128.00) (   0.80,-124.12)  441.33                80
 01/17/2021   19:05:44   (   0.01,-128.02) (   0.25,-129.29)  144.04                80
 01/19/2021   18:56:11   (   0.01,-127.97) (  -0.34,-126.32)  187.90                80
 01/20/2021   07:14:54   (   0.02,-127.93) (  -0.76,-131.51)  407.87                80
 01/22/2021   07:02:43   (   0.02,-127.89) (  -0.11,-128.56)   76.43                80
 01/24/2021   06:53:10   (   0.02,-127.84) (   0.49,-125.60)  254.25                80
 01/24/2021   19:11:45   (  -0.06,-127.85) (   0.57,-130.76)  330.95                80