../ dmsp_15_ephemeris_20210102.txt 22-Jun-2023 16:34 106407 dmsp_16_ephemeris_20210102.txt 22-Jun-2023 16:34 106489 dmsp_17_ephemeris_20210102.txt 22-Jun-2023 16:34 106521 dmsp_18_ephemeris_20210102.txt 22-Jun-2023 16:34 106504