../ dmsp_15_ephemeris_20180105.txt 22-Jun-2023 16:51 106409 dmsp_16_ephemeris_20180105.txt 22-Jun-2023 16:51 106496 dmsp_17_ephemeris_20180105.txt 22-Jun-2023 16:51 106446 dmsp_18_ephemeris_20180105.txt 22-Jun-2023 16:51 106418