../ dmsp_15_ephemeris_20210627.txt 22-Jun-2023 00:47 109487 dmsp_16_ephemeris_20210627.txt 22-Jun-2023 00:47 109544 dmsp_17_ephemeris_20210627.txt 22-Jun-2023 00:47 109620 dmsp_18_ephemeris_20210627.txt 22-Jun-2023 00:47 109567