../ dmsp_15_ephemeris_20210825.txt 22-Jun-2023 16:30 109739 dmsp_16_ephemeris_20210825.txt 22-Jun-2023 16:30 109709 dmsp_17_ephemeris_20210825.txt 22-Jun-2023 16:30 109757 dmsp_18_ephemeris_20210825.txt 22-Jun-2023 16:30 109591