../ dmsp_15_ephemeris_20211229.txt 22-Jun-2023 17:05 109284 dmsp_16_ephemeris_20211229.txt 22-Jun-2023 17:05 109458 dmsp_17_ephemeris_20211229.txt 22-Jun-2023 17:05 109290 dmsp_18_ephemeris_20211229.txt 22-Jun-2023 17:05 109325