../ dmsp_15_ephemeris_20210705.txt 22-Jun-2023 16:36 109517 dmsp_16_ephemeris_20210705.txt 22-Jun-2023 16:36 109525 dmsp_17_ephemeris_20210705.txt 22-Jun-2023 16:36 109558 dmsp_18_ephemeris_20210705.txt 22-Jun-2023 16:36 109626