../ dmsp_15_ephemeris_20200718.txt 22-Jun-2023 00:44 109630 dmsp_16_ephemeris_20200718.txt 22-Jun-2023 00:44 109622 dmsp_17_ephemeris_20200718.txt 22-Jun-2023 00:44 109601 dmsp_18_ephemeris_20200718.txt 22-Jun-2023 00:44 109567