../ dmsp_15_ephemeris_20220509.txt 22-Jun-2023 00:51 109594 dmsp_16_ephemeris_20220509.txt 22-Jun-2023 00:51 109626 dmsp_17_ephemeris_20220509.txt 22-Jun-2023 00:51 109682 dmsp_18_ephemeris_20220509.txt 22-Jun-2023 00:51 109525