../ dmsp_15_ephemeris_20221217.txt 22-Jun-2023 16:41 109278 dmsp_16_ephemeris_20221217.txt 22-Jun-2023 16:41 109270 dmsp_17_ephemeris_20221217.txt 22-Jun-2023 16:41 109426 dmsp_18_ephemeris_20221217.txt 22-Jun-2023 16:41 109277