../ dmsp_15_ephemeris_20210711.txt 22-Jun-2023 17:03 109605 dmsp_16_ephemeris_20210711.txt 22-Jun-2023 17:03 109619 dmsp_17_ephemeris_20210711.txt 22-Jun-2023 17:03 109599 dmsp_18_ephemeris_20210711.txt 22-Jun-2023 17:03 109460