Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 4 4.  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)
 04/10/2021   23:47:28   (  78.46, 155.71) 04/10/2021   23:48:42  (  78.46, 155.54)    3.80                74
 04/11/2021   00:38:33   ( -78.44, -37.14) 04/11/2021   00:39:26  ( -78.45, -37.06)    1.78                53
 04/11/2021   01:29:29   (  78.44, 130.07) 04/11/2021   01:30:12  (  78.47, 130.14)    3.62                43
 04/11/2021   02:20:33   ( -78.46, -62.55) 04/11/2021   02:20:56  ( -78.45, -62.46)    2.04                23
 04/11/2021   03:11:29   (  78.45, 104.67) 04/11/2021   03:11:42  (  78.47, 104.73)    2.69                13
 04/11/2021   04:02:33   ( -78.47, -87.95) 04/11/2021   04:02:26  ( -78.46, -87.87)    2.66                 7
 04/11/2021   04:53:29   (  78.46,  79.26) 04/11/2021   04:53:12  (  78.48,  79.33)    1.89                17
 04/11/2021   05:44:33   ( -78.49,-113.36) 04/11/2021   05:43:57  ( -78.50,-113.50)    3.39                36
 04/11/2021   06:35:29   (  78.48,  53.86) 04/11/2021   06:34:42  (  78.48,  53.92)    1.41                47
 04/11/2021   07:26:32   ( -78.50,-138.76) 04/11/2021   07:25:26  ( -78.50,-138.90)    3.07                66
 04/11/2021   08:17:26   (  78.56,  28.94) 04/11/2021   08:16:13  (  78.56,  28.06)   19.29                73