../ dmsp_15_ephemeris_20210615.txt 22-Jun-2023 17:02 109632 dmsp_16_ephemeris_20210615.txt 22-Jun-2023 17:02 109543 dmsp_17_ephemeris_20210615.txt 22-Jun-2023 17:02 109483 dmsp_18_ephemeris_20210615.txt 22-Jun-2023 17:02 109569