Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 1 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/04/2021   07:15:01   (  -0.07,-128.21) (  -0.79,-131.51)  375.76                80
 01/06/2021   07:02:49   (  -0.08,-128.19) (  -0.17,-128.55)   41.49                80
 01/08/2021   06:53:17   (  -0.08,-128.16) (   0.46,-125.59)  292.03                80
 01/08/2021   19:11:53   (   0.05,-128.18) (   0.59,-130.76)  293.65                80
 01/10/2021   19:02:21   (   0.05,-128.14) (  -0.04,-127.80)   39.01                80
 01/12/2021   18:50:08   (   0.06,-128.10) (  -0.62,-124.84)  371.25                80
 01/13/2021   07:08:53   (  -0.03,-128.07) (  -0.43,-130.04)  223.53                80
 01/15/2021   06:59:20   (  -0.03,-128.03) (   0.15,-127.07)  108.66                80
 01/15/2021   19:17:55   (  -0.00,-128.05) (   0.90,-132.24)  476.80                80
 01/17/2021   06:47:08   (  -0.05,-127.99) (   0.80,-124.12)  440.95                80
 01/17/2021   19:05:44   (   0.01,-128.01) (   0.26,-129.29)  144.62                80