../ dmsp_15_ephemeris_20211113.txt 22-Jun-2023 16:37 109515 dmsp_16_ephemeris_20211113.txt 22-Jun-2023 16:37 109608 dmsp_17_ephemeris_20211113.txt 22-Jun-2023 16:37 109287 dmsp_18_ephemeris_20211113.txt 22-Jun-2023 16:37 109436