../ dmsp_15_ephemeris_20181206.txt 22-Jun-2023 00:39 109379 dmsp_16_ephemeris_20181206.txt 22-Jun-2023 00:39 109461 dmsp_17_ephemeris_20181206.txt 22-Jun-2023 00:39 109415 dmsp_18_ephemeris_20181206.txt 22-Jun-2023 00:39 109333