../ dmsp_15_ephemeris_20181017.txt 22-Jun-2023 00:38 109516 dmsp_16_ephemeris_20181017.txt 22-Jun-2023 00:38 109591 dmsp_17_ephemeris_20181017.txt 22-Jun-2023 00:38 109522 dmsp_18_ephemeris_20181017.txt 22-Jun-2023 00:38 109548