../ dmsp_15_ephemeris_20180706.txt 22-Jun-2023 00:37 109598 dmsp_16_ephemeris_20180706.txt 22-Jun-2023 00:37 109496 dmsp_17_ephemeris_20180706.txt 22-Jun-2023 00:37 109638 dmsp_18_ephemeris_20180706.txt 22-Jun-2023 00:37 109658