../ dmsp_15_ephemeris_20190312.txt 22-Jun-2023 16:55 108061 dmsp_16_ephemeris_20190312.txt 22-Jun-2023 16:55 108147 dmsp_17_ephemeris_20190312.txt 22-Jun-2023 16:55 108192 dmsp_18_ephemeris_20190312.txt 22-Jun-2023 16:55 108179