../ dmsp_15_ephemeris_20190505.txt 22-Jun-2023 00:40 109616 dmsp_16_ephemeris_20190505.txt 22-Jun-2023 00:40 109452 dmsp_17_ephemeris_20190505.txt 22-Jun-2023 00:40 109621 dmsp_18_ephemeris_20190505.txt 22-Jun-2023 00:40 109622