../ dmsp_15_ephemeris_20210530.txt 22-Jun-2023 16:29 109560 dmsp_16_ephemeris_20210530.txt 22-Jun-2023 16:29 109598 dmsp_17_ephemeris_20210530.txt 22-Jun-2023 16:29 109596 dmsp_18_ephemeris_20210530.txt 22-Jun-2023 16:29 109631