../ dmsp_15_ephemeris_20201206.txt 22-Jun-2023 00:45 109450 dmsp_16_ephemeris_20201206.txt 22-Jun-2023 00:45 109460 dmsp_17_ephemeris_20201206.txt 22-Jun-2023 00:45 109454 dmsp_18_ephemeris_20201206.txt 22-Jun-2023 00:45 109263