../ dmsp_15_ephemeris_20220403.txt 22-Jun-2023 00:50 108197 dmsp_16_ephemeris_20220403.txt 22-Jun-2023 00:50 108178 dmsp_17_ephemeris_20220403.txt 22-Jun-2023 00:50 108250 dmsp_18_ephemeris_20220403.txt 22-Jun-2023 00:50 108182