../ dmsp_15_ephemeris_20211107.txt 22-Jun-2023 17:04 109498 dmsp_16_ephemeris_20211107.txt 22-Jun-2023 17:04 109386 dmsp_17_ephemeris_20211107.txt 22-Jun-2023 17:04 109511 dmsp_18_ephemeris_20211107.txt 22-Jun-2023 17:04 109342