Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 3 11.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-19) NOAA-19 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/13/2021   17:27:04   (  78.25,-111.59) 03/13/2021   17:28:10  (  78.28,-108.31)   74.25                66
 03/13/2021   18:18:01   ( -78.55,  57.58) 03/13/2021   18:19:01  ( -78.54,  57.50)    1.93                60
 03/13/2021   19:08:56   (  78.56,-135.11) 03/13/2021   19:09:47  (  78.56,-135.29)    3.83                51
 03/13/2021   20:00:01   ( -78.56,  32.18) 03/13/2021   20:00:31  ( -78.55,  32.10)    2.72                30
 03/13/2021   20:50:57   (  78.53,-160.75) 03/13/2021   20:51:17  (  78.56,-160.69)    3.38                20
 03/13/2021   21:42:02   ( -78.54,   6.54) 03/13/2021   21:42:01  ( -78.55,   6.70)    3.51                 1
 03/13/2021   22:32:57   (  78.55, 173.85) 03/13/2021   22:32:47  (  78.57, 173.91)    2.41                10
 03/13/2021   23:24:02   ( -78.56, -18.86) 03/13/2021   23:23:31  ( -78.55, -18.70)    3.41                31
 03/14/2021   00:14:57   (  78.56, 148.45) 03/14/2021   00:14:17  (  78.57, 148.51)    1.62                40
 03/14/2021   01:06:02   ( -78.57, -44.25) 03/14/2021   01:05:02  ( -78.60, -44.33)    3.16                60
 03/14/2021   01:56:57   (  78.58, 123.05) 03/14/2021   01:55:47  (  78.58, 123.11)    1.38                70