../ dmsp_15_ephemeris_20200502.txt 22-Jun-2023 00:43 109525 dmsp_16_ephemeris_20200502.txt 22-Jun-2023 00:43 109627 dmsp_17_ephemeris_20200502.txt 22-Jun-2023 00:43 109684 dmsp_18_ephemeris_20200502.txt 22-Jun-2023 00:43 109505