../ dmsp_15_ephemeris_20170624.txt 22-Jun-2023 00:34 109602 dmsp_16_ephemeris_20170624.txt 22-Jun-2023 00:34 109454 dmsp_17_ephemeris_20170624.txt 22-Jun-2023 00:34 109712 dmsp_18_ephemeris_20170624.txt 22-Jun-2023 00:34 109633