../ dmsp_15_ephemeris_20180824.txt 22-Jun-2023 00:38 109614 dmsp_16_ephemeris_20180824.txt 22-Jun-2023 00:38 109655 dmsp_17_ephemeris_20180824.txt 22-Jun-2023 00:38 109753 dmsp_18_ephemeris_20180824.txt 22-Jun-2023 00:38 109580