../ dmsp_15_ephemeris_20200423.txt 22-Jun-2023 00:43 109603 dmsp_16_ephemeris_20200423.txt 22-Jun-2023 00:43 109651 dmsp_17_ephemeris_20200423.txt 22-Jun-2023 00:43 109670 dmsp_18_ephemeris_20200423.txt 22-Jun-2023 00:43 109660