../ dmsp_15_ephemeris_20200424.txt 22-Jun-2023 00:43 109565 dmsp_16_ephemeris_20200424.txt 22-Jun-2023 00:43 109596 dmsp_17_ephemeris_20200424.txt 22-Jun-2023 00:43 109605 dmsp_18_ephemeris_20200424.txt 22-Jun-2023 00:43 109616