../ dmsp_15_ephemeris_20220428.txt 22-Jun-2023 00:51 109588 dmsp_16_ephemeris_20220428.txt 22-Jun-2023 00:51 109610 dmsp_17_ephemeris_20220428.txt 22-Jun-2023 00:51 109690 dmsp_18_ephemeris_20220428.txt 22-Jun-2023 00:51 109580