../ dmsp_15_ephemeris_20181114.txt 22-Jun-2023 00:39 109511 dmsp_16_ephemeris_20181114.txt 22-Jun-2023 00:39 109473 dmsp_17_ephemeris_20181114.txt 22-Jun-2023 00:39 109373 dmsp_18_ephemeris_20181114.txt 22-Jun-2023 00:39 109328