../ dmsp_15_ephemeris_20181230.txt 22-Jun-2023 00:39 109419 dmsp_16_ephemeris_20181230.txt 22-Jun-2023 00:39 109361 dmsp_17_ephemeris_20181230.txt 22-Jun-2023 00:39 109430 dmsp_18_ephemeris_20181230.txt 22-Jun-2023 00:39 109230