../ dmsp_15_ephemeris_20220505.txt 22-Jun-2023 00:51 109586 dmsp_16_ephemeris_20220505.txt 22-Jun-2023 00:51 109510 dmsp_17_ephemeris_20220505.txt 22-Jun-2023 00:51 109603 dmsp_18_ephemeris_20220505.txt 22-Jun-2023 00:51 109508