../ dmsp_15_ephemeris_20200318.txt 22-Jun-2023 16:58 108176 dmsp_16_ephemeris_20200318.txt 22-Jun-2023 16:58 108240 dmsp_17_ephemeris_20200318.txt 22-Jun-2023 16:58 108064 dmsp_18_ephemeris_20200318.txt 22-Jun-2023 16:58 108113