../ dmsp_15_ephemeris_20211010.txt 22-Jun-2023 16:36 109627 dmsp_16_ephemeris_20211010.txt 22-Jun-2023 16:36 109672 dmsp_17_ephemeris_20211010.txt 22-Jun-2023 16:36 109571 dmsp_18_ephemeris_20211010.txt 22-Jun-2023 16:36 109655