../ dmsp_15_ephemeris_20210815.txt 22-Jun-2023 17:03 109582 dmsp_16_ephemeris_20210815.txt 22-Jun-2023 17:03 109594 dmsp_17_ephemeris_20210815.txt 22-Jun-2023 17:03 109768 dmsp_18_ephemeris_20210815.txt 22-Jun-2023 17:03 109534