../ dmsp_15_ephemeris_20210315.txt 22-Jun-2023 17:02 108211 dmsp_16_ephemeris_20210315.txt 22-Jun-2023 17:02 108192 dmsp_17_ephemeris_20210315.txt 22-Jun-2023 17:02 108156 dmsp_18_ephemeris_20210315.txt 22-Jun-2023 17:02 108099