../ dmsp_15_ephemeris_20210621.txt 22-Jun-2023 00:47 109592 dmsp_16_ephemeris_20210621.txt 22-Jun-2023 00:47 109522 dmsp_17_ephemeris_20210621.txt 22-Jun-2023 00:47 109574 dmsp_18_ephemeris_20210621.txt 22-Jun-2023 00:47 109469