../ dmsp_15_ephemeris_20181115.txt 22-Jun-2023 00:39 109431 dmsp_16_ephemeris_20181115.txt 22-Jun-2023 00:39 109474 dmsp_17_ephemeris_20181115.txt 22-Jun-2023 00:39 109487 dmsp_18_ephemeris_20181115.txt 22-Jun-2023 00:39 109430