../ dmsp_15_ephemeris_20221004.txt 22-Jun-2023 00:53 109553 dmsp_16_ephemeris_20221004.txt 22-Jun-2023 00:53 109571 dmsp_17_ephemeris_20221004.txt 22-Jun-2023 00:53 109564 dmsp_18_ephemeris_20221004.txt 22-Jun-2023 00:53 109457