../ dmsp_15_ephemeris_20210226.txt 22-Jun-2023 00:46 108153 dmsp_16_ephemeris_20210226.txt 22-Jun-2023 00:46 108108 dmsp_17_ephemeris_20210226.txt 22-Jun-2023 00:46 108090 dmsp_18_ephemeris_20210226.txt 22-Jun-2023 00:46 108016