../ dmsp_15_ephemeris_20181022.txt 22-Jun-2023 16:29 109665 dmsp_16_ephemeris_20181022.txt 22-Jun-2023 16:29 109641 dmsp_17_ephemeris_20181022.txt 22-Jun-2023 16:29 109590 dmsp_18_ephemeris_20181022.txt 22-Jun-2023 16:29 109441