../ dmsp_15_ephemeris_20201106.txt 22-Jun-2023 16:34 109394 dmsp_16_ephemeris_20201106.txt 22-Jun-2023 16:34 109424 dmsp_17_ephemeris_20201106.txt 22-Jun-2023 16:34 109483 dmsp_18_ephemeris_20201106.txt 22-Jun-2023 16:34 109409