../ dmsp_15_ephemeris_20110430.txt 22-Jun-2023 16:11 109620 dmsp_16_ephemeris_20110430.txt 22-Jun-2023 16:11 109674 dmsp_17_ephemeris_20110430.txt 22-Jun-2023 16:11 109583 dmsp_18_ephemeris_20110430.txt 22-Jun-2023 16:11 109620