../ dmsp_15_ephemeris_20211009.txt 22-Jun-2023 00:48 109626 dmsp_16_ephemeris_20211009.txt 22-Jun-2023 00:48 109566 dmsp_17_ephemeris_20211009.txt 22-Jun-2023 00:48 109535 dmsp_18_ephemeris_20211009.txt 22-Jun-2023 00:48 109674