../ dmsp_15_ephemeris_20210824.txt 22-Jun-2023 00:48 109770 dmsp_16_ephemeris_20210824.txt 22-Jun-2023 00:48 109608 dmsp_17_ephemeris_20210824.txt 22-Jun-2023 00:48 109742 dmsp_18_ephemeris_20210824.txt 22-Jun-2023 00:48 109586