../ dmsp_15_ephemeris_20181229.txt 22-Jun-2023 00:39 109410 dmsp_16_ephemeris_20181229.txt 22-Jun-2023 00:39 109429 dmsp_17_ephemeris_20181229.txt 22-Jun-2023 00:39 109394 dmsp_18_ephemeris_20181229.txt 22-Jun-2023 00:39 109366