../ dmsp_15_ephemeris_20200606.txt 22-Jun-2023 16:33 109508 dmsp_16_ephemeris_20200606.txt 22-Jun-2023 16:33 109594 dmsp_17_ephemeris_20200606.txt 22-Jun-2023 16:33 109542 dmsp_18_ephemeris_20200606.txt 22-Jun-2023 16:33 109541