../ dmsp_15_ephemeris_20230212.txt 22-Jun-2023 00:55 108042 dmsp_16_ephemeris_20230212.txt 22-Jun-2023 00:55 108169 dmsp_17_ephemeris_20230212.txt 22-Jun-2023 00:55 107998 dmsp_18_ephemeris_20230212.txt 22-Jun-2023 00:55 108018