../ dmsp_15_ephemeris_20210505.txt 22-Jun-2023 16:35 109522 dmsp_16_ephemeris_20210505.txt 22-Jun-2023 16:35 109586 dmsp_17_ephemeris_20210505.txt 22-Jun-2023 16:35 109693 dmsp_18_ephemeris_20210505.txt 22-Jun-2023 16:35 109535