../ dmsp_15_ephemeris_20180123.txt 22-Jun-2023 00:36 107976 dmsp_16_ephemeris_20180123.txt 22-Jun-2023 00:36 108042 dmsp_17_ephemeris_20180123.txt 22-Jun-2023 00:36 107861 dmsp_18_ephemeris_20180123.txt 22-Jun-2023 00:36 107868