../ dmsp_15_ephemeris_20220512.txt 22-Jun-2023 00:51 109590 dmsp_16_ephemeris_20220512.txt 22-Jun-2023 00:51 109493 dmsp_17_ephemeris_20220512.txt 22-Jun-2023 00:51 109632 dmsp_18_ephemeris_20220512.txt 22-Jun-2023 00:51 109533