../ dmsp_15_ephemeris_20120318.txt 22-Jun-2023 00:19 108121 dmsp_16_ephemeris_20120318.txt 22-Jun-2023 00:19 108284 dmsp_17_ephemeris_20120318.txt 22-Jun-2023 00:19 108262 dmsp_18_ephemeris_20120318.txt 22-Jun-2023 00:19 108248