../ dmsp_15_ephemeris_20190103.txt 22-Jun-2023 00:39 106543 dmsp_16_ephemeris_20190103.txt 22-Jun-2023 00:39 106491 dmsp_17_ephemeris_20190103.txt 22-Jun-2023 00:39 106511 dmsp_18_ephemeris_20190103.txt 22-Jun-2023 00:39 106352