../ dmsp_15_ephemeris_20170826.txt 22-Jun-2023 16:26 109530 dmsp_16_ephemeris_20170826.txt 22-Jun-2023 16:26 109525 dmsp_17_ephemeris_20170826.txt 22-Jun-2023 16:26 109718 dmsp_18_ephemeris_20170826.txt 22-Jun-2023 16:26 109623