../ dmsp_15_ephemeris_20220515.txt 22-Jun-2023 00:51 109537 dmsp_16_ephemeris_20220515.txt 22-Jun-2023 00:51 109712 dmsp_17_ephemeris_20220515.txt 22-Jun-2023 00:51 109713 dmsp_18_ephemeris_20220515.txt 22-Jun-2023 00:51 109607