../ dmsp_15_ephemeris_20211207.txt 22-Jun-2023 16:37 109315 dmsp_16_ephemeris_20211207.txt 22-Jun-2023 16:37 109473 dmsp_17_ephemeris_20211207.txt 22-Jun-2023 16:37 109360 dmsp_18_ephemeris_20211207.txt 22-Jun-2023 16:37 109386