../ dmsp_15_ephemeris_20130802.txt 22-Jun-2023 00:22 109522 dmsp_16_ephemeris_20130802.txt 22-Jun-2023 00:22 109574 dmsp_17_ephemeris_20130802.txt 22-Jun-2023 00:22 109734 dmsp_18_ephemeris_20130802.txt 22-Jun-2023 00:22 109618