../ dmsp_15_ephemeris_20110528.txt 22-Jun-2023 00:17 109511 dmsp_16_ephemeris_20110528.txt 22-Jun-2023 00:17 109614 dmsp_17_ephemeris_20110528.txt 22-Jun-2023 00:17 109632 dmsp_18_ephemeris_20110528.txt 22-Jun-2023 00:17 109525