../ dmsp_15_ephemeris_20220501.txt 22-Jun-2023 00:51 109625 dmsp_16_ephemeris_20220501.txt 22-Jun-2023 00:51 109611 dmsp_17_ephemeris_20220501.txt 22-Jun-2023 00:51 109641 dmsp_18_ephemeris_20220501.txt 22-Jun-2023 00:51 109534