../ dmsp_15_ephemeris_20110116.txt 22-Jun-2023 00:16 107939 dmsp_16_ephemeris_20110116.txt 22-Jun-2023 00:16 107892 dmsp_17_ephemeris_20110116.txt 22-Jun-2023 00:16 107830 dmsp_18_ephemeris_20110116.txt 22-Jun-2023 00:16 107974