Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 12 20.  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)
 12/22/2021   18:44:21   (  77.39,-124.73) 12/22/2021   18:45:32  (  77.45,-123.24)   36.77                71
 12/22/2021   19:35:21   ( -77.58,  43.44) 12/22/2021   19:36:19  ( -77.57,  43.54)    2.50                58
 12/22/2021   20:26:16   (  77.60,-149.18) 12/22/2021   20:27:05  (  77.59,-149.23)    1.69                49
 12/22/2021   21:17:21   ( -77.58,  17.97) 12/22/2021   21:17:49  ( -77.58,  18.13)    3.78                28
 12/22/2021   22:08:16   (  77.60,-174.65) 12/22/2021   22:08:35  (  77.59,-174.64)    1.15                19
 12/22/2021   22:59:21   ( -77.59,  -7.50) 12/22/2021   22:59:20  ( -77.63,  -7.48)    4.28                 1
 12/22/2021   23:50:16   (  77.61, 159.88) 12/22/2021   23:50:05  (  77.60, 159.95)    1.80                11
 12/23/2021   00:41:20   ( -77.63, -32.76) 12/23/2021   00:40:50  ( -77.64, -32.89)    3.13                30
 12/23/2021   01:32:16   (  77.62, 134.42) 12/23/2021   01:31:35  (  77.61, 134.54)    2.93                41
 12/23/2021   02:23:20   ( -77.64, -58.23) 12/23/2021   02:22:20  ( -77.64, -58.30)    1.81                60
 12/23/2021   03:14:16   (  77.62, 108.95) 12/23/2021   03:13:06  (  77.66, 108.93)    4.14                70