../ dmsp_15_ephemeris_20190430.txt 22-Jun-2023 00:40 109583 dmsp_16_ephemeris_20190430.txt 22-Jun-2023 00:40 109517 dmsp_17_ephemeris_20190430.txt 22-Jun-2023 00:40 109721 dmsp_18_ephemeris_20190430.txt 22-Jun-2023 00:40 109634