../ dmsp_15_ephemeris_20211210.txt 22-Jun-2023 00:49 109365 dmsp_16_ephemeris_20211210.txt 22-Jun-2023 00:49 109286 dmsp_17_ephemeris_20211210.txt 22-Jun-2023 00:49 109270 dmsp_18_ephemeris_20211210.txt 22-Jun-2023 00:49 109328