../ dmsp_15_ephemeris_20101212.txt 22-Jun-2023 16:07 109403 dmsp_16_ephemeris_20101212.txt 22-Jun-2023 16:07 109317 dmsp_17_ephemeris_20101212.txt 22-Jun-2023 16:07 109261 dmsp_18_ephemeris_20101212.txt 22-Jun-2023 16:07 109355