../ dmsp_15_ephemeris_20180628.txt 22-Jun-2023 00:37 109531 dmsp_16_ephemeris_20180628.txt 22-Jun-2023 00:37 109658 dmsp_17_ephemeris_20180628.txt 22-Jun-2023 00:37 109671 dmsp_18_ephemeris_20180628.txt 22-Jun-2023 00:37 109619