../ dmsp_15_ephemeris_20181109.txt 22-Jun-2023 00:38 109624 dmsp_16_ephemeris_20181109.txt 22-Jun-2023 00:38 109380 dmsp_17_ephemeris_20181109.txt 22-Jun-2023 00:38 109433 dmsp_18_ephemeris_20181109.txt 22-Jun-2023 00:38 109322