../ dmsp_15_ephemeris_20220510.txt 22-Jun-2023 00:51 109673 dmsp_16_ephemeris_20220510.txt 22-Jun-2023 00:51 109620 dmsp_17_ephemeris_20220510.txt 22-Jun-2023 00:51 109674 dmsp_18_ephemeris_20220510.txt 22-Jun-2023 00:51 109588