../ dmsp_15_ephemeris_20200426.txt 22-Jun-2023 00:43 109580 dmsp_16_ephemeris_20200426.txt 22-Jun-2023 00:43 109433 dmsp_17_ephemeris_20200426.txt 22-Jun-2023 00:43 109724 dmsp_18_ephemeris_20200426.txt 22-Jun-2023 00:43 109608