../ dmsp_15_ephemeris_20210108.txt 22-Jun-2023 16:34 106554 dmsp_16_ephemeris_20210108.txt 22-Jun-2023 16:34 106458 dmsp_17_ephemeris_20210108.txt 22-Jun-2023 16:34 106439 dmsp_18_ephemeris_20210108.txt 22-Jun-2023 16:34 106489