../ dmsp_15_ephemeris_20230206.txt 22-Jun-2023 00:55 108030 dmsp_16_ephemeris_20230206.txt 22-Jun-2023 00:55 108160 dmsp_17_ephemeris_20230206.txt 22-Jun-2023 00:55 107970 dmsp_18_ephemeris_20230206.txt 22-Jun-2023 00:55 107940