../ dmsp_15_ephemeris_20210306.txt 22-Jun-2023 00:46 108264 dmsp_16_ephemeris_20210306.txt 22-Jun-2023 00:46 108225 dmsp_17_ephemeris_20210306.txt 22-Jun-2023 00:46 108211 dmsp_18_ephemeris_20210306.txt 22-Jun-2023 00:46 108104