../ dmsp_15_ephemeris_20200618.txt 22-Jun-2023 00:44 109650 dmsp_16_ephemeris_20200618.txt 22-Jun-2023 00:44 109538 dmsp_17_ephemeris_20200618.txt 22-Jun-2023 00:44 109684 dmsp_18_ephemeris_20200618.txt 22-Jun-2023 00:44 109517