../ dmsp_15_ephemeris_20200701.txt 22-Jun-2023 00:44 109522 dmsp_16_ephemeris_20200701.txt 22-Jun-2023 00:44 109573 dmsp_17_ephemeris_20200701.txt 22-Jun-2023 00:44 109589 dmsp_18_ephemeris_20200701.txt 22-Jun-2023 00:44 109472