../ dmsp_15_ephemeris_20101212.txt 22-Jun-2023 00:16 109403 dmsp_16_ephemeris_20101212.txt 22-Jun-2023 00:16 109317 dmsp_17_ephemeris_20101212.txt 22-Jun-2023 00:16 109261 dmsp_18_ephemeris_20101212.txt 22-Jun-2023 00:16 109355