../ dmsp_15_ephemeris_20181008.txt 22-Jun-2023 00:38 109658 dmsp_16_ephemeris_20181008.txt 22-Jun-2023 00:38 109608 dmsp_17_ephemeris_20181008.txt 22-Jun-2023 00:38 109657 dmsp_18_ephemeris_20181008.txt 22-Jun-2023 00:38 109532