../ dmsp_15_ephemeris_20221027.txt 22-Jun-2023 00:53 109509 dmsp_16_ephemeris_20221027.txt 22-Jun-2023 00:53 109537 dmsp_17_ephemeris_20221027.txt 22-Jun-2023 00:53 109444 dmsp_18_ephemeris_20221027.txt 22-Jun-2023 00:53 109477