../ dmsp_15_ephemeris_20160819.txt 22-Jun-2023 16:23 109630 dmsp_16_ephemeris_20160819.txt 22-Jun-2023 16:23 109504 dmsp_17_ephemeris_20160819.txt 22-Jun-2023 16:23 109600 dmsp_18_ephemeris_20160819.txt 22-Jun-2023 16:23 109681 dmsp_19_ephemeris_20160819.txt 22-Jun-2023 16:23 109739