Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-A
TLE Epoch: 2021 11 11.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(METOP-A) METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 11/11/2021   03:58:24   (  77.72, 100.94) 11/11/2021   03:58:35  (  77.69, 100.94)    4.21                11
 11/11/2021   04:49:08   ( -77.72, -91.71) 11/11/2021   04:49:16  ( -77.70, -91.69)    2.39                 8
 11/11/2021   05:39:52   (  77.69,  75.75) 11/11/2021   05:39:56  (  77.71,  75.70)    2.58                 4
 11/11/2021   06:30:37   ( -77.72,-117.10) 11/11/2021   06:30:37  ( -77.72,-116.93)    3.99                 0
 11/11/2021   07:21:21   (  77.69,  50.36) 11/11/2021   07:21:18  (  77.69,  50.26)    2.45                 3
 11/11/2021   08:12:05   ( -77.69,-142.29) 11/11/2021   08:11:59  ( -77.70,-142.37)    2.26                 6
 11/11/2021   09:02:50   (  77.70,  24.96) 11/11/2021   09:02:39  (  77.71,  25.01)    1.67                11
 11/11/2021   09:53:34   ( -77.69,-167.68) 11/11/2021   09:53:21  ( -77.68,-167.81)    3.41                13
 11/11/2021   10:44:19   (  77.70,  -0.43) 11/11/2021   10:44:01  (  77.69,  -0.43)    1.69                18
 11/11/2021   11:35:03   ( -77.69, 166.92) 11/11/2021   11:34:42  ( -77.70, 166.95)    0.55                21
 11/11/2021   12:25:48   (  77.71, -25.82) 11/11/2021   12:25:22  (  77.71, -25.67)    3.57                26
 11/11/2021   13:16:32   ( -77.70, 141.53) 11/11/2021   13:16:04  ( -77.68, 141.51)    2.69                28
 11/11/2021   14:07:16   (  77.67, -51.01) 11/11/2021   14:06:44  (  77.69, -51.11)    2.97                32
 11/11/2021   14:58:01   ( -77.70, 116.14) 11/11/2021   14:57:25  ( -77.70, 116.26)    2.98                36
 11/11/2021   15:48:45   (  77.67, -76.40) 11/11/2021   15:48:06  (  77.67, -76.55)    3.56                39
 11/11/2021   16:39:29   ( -77.67,  90.95) 11/11/2021   16:38:47  ( -77.68,  90.83)    3.12                42
 11/11/2021   17:30:14   (  77.68,-101.80) 11/11/2021   17:29:27  (  77.69,-101.79)    0.84                47
 11/11/2021   18:20:58   ( -77.67,  65.56) 11/11/2021   18:20:08  ( -77.70,  65.58)    2.88                50
 11/11/2021   19:11:43   (  77.68,-127.19) 11/11/2021   19:10:49  (  77.67,-127.23)    2.30                54
 11/11/2021   20:02:27   ( -77.68,  40.17) 11/11/2021   20:01:30  ( -77.68,  40.14)    0.57                57
 11/11/2021   20:53:12   (  77.69,-152.58) 11/11/2021   20:52:10  (  77.69,-152.47)    2.53                62
 11/11/2021   21:43:56   ( -77.68,  14.78) 11/11/2021   21:42:52  ( -77.65,  14.71)    3.35                64
 11/11/2021   22:34:41   (  77.69,-177.97) 11/11/2021   22:33:32  (  77.67,-177.91)    3.43                69
 11/11/2021   23:25:25   ( -77.68, -10.62) 11/11/2021   23:24:13  ( -77.68, -10.54)    2.09                72
 11/12/2021   00:16:08   (  77.62, 157.04) 11/12/2021   00:14:54  (  77.64, 156.65)    9.73                74
 11/12/2021   01:06:50   ( -77.52, -35.22) 11/12/2021   01:05:38  ( -77.53, -36.55)   32.00                72
 11/12/2021   01:57:29   (  77.28, 133.20) 11/12/2021   01:56:24  (  77.27, 129.72)   85.27                65