../ dmsp_15_ephemeris_20200811.txt 22-Jun-2023 00:44 109677 dmsp_16_ephemeris_20200811.txt 22-Jun-2023 00:44 109738 dmsp_17_ephemeris_20200811.txt 22-Jun-2023 00:44 109577 dmsp_18_ephemeris_20200811.txt 22-Jun-2023 00:44 109564