../ dmsp_15_ephemeris_20210102.txt 22-Jun-2023 00:46 106407 dmsp_16_ephemeris_20210102.txt 22-Jun-2023 00:46 106489 dmsp_17_ephemeris_20210102.txt 22-Jun-2023 00:46 106521 dmsp_18_ephemeris_20210102.txt 22-Jun-2023 00:46 106504