Simultaneous Nadir Overpasses (SNOs) between NPP and METOP-C
TLE Epoch: 2021 3 31.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(METOP-C) METOP-C Lat/Lon    Distance(km)  Time Diff(sec)
 04/13/2021   21:08:13   (  73.37,-146.66) 04/13/2021   21:09:19  (  73.30,-143.88)   88.97                66
 04/13/2021   21:58:54   ( -73.22,  20.99) 04/13/2021   22:00:03  ( -73.16,  23.13)   69.23                69
 04/13/2021   22:49:36   (  73.02,-171.28) 04/13/2021   22:50:47  (  72.98,-169.93)   44.23                71
 04/13/2021   23:40:17   ( -72.92,  -3.74) 04/13/2021   23:41:29  ( -72.89,  -2.79)   31.53                72
 04/14/2021   00:31:00   (  72.78, 163.87) 04/14/2021   00:32:13  (  72.70, 164.16)   12.83                73
 04/14/2021   01:21:42   ( -72.68, -28.61) 04/14/2021   01:22:55  ( -72.66, -28.59)    1.99                73
 04/14/2021   02:12:28   (  72.68, 138.69) 04/14/2021   02:13:35  (  72.68, 138.78)    2.80                67