../ dmsp_15_ephemeris_20190326.txt 22-Jun-2023 00:40 108207 dmsp_16_ephemeris_20190326.txt 22-Jun-2023 00:40 108185 dmsp_17_ephemeris_20190326.txt 22-Jun-2023 00:40 108352 dmsp_18_ephemeris_20190326.txt 22-Jun-2023 00:40 108207