NOTICE ADVISORY TO QZSS USERS (NAQU) 2021051 SUBJ: SVN001 (PRN193) UNUSABLE JDAY 091/1820 - JDAY 092/0921 1. NAQU TYPE: L2C_UNUSABLE NAQU NUMBER: 2021051 NAQU DTG: 020921Z APR 2021 REFERENCE NAQU: 2021042 REF NAQU DTG: 011821Z APR 2021 SVN: 001 PRN: 193 START JDAY: 091 START TIME ZULU: 1820 START CALENDAR DATE: 01 APR 2021 STOP JDAY: 092 STOP TIME ZULU: 0921 STOP CALENDAR DATE: 02 APR 2021 2. CONDITION: QZSS SATELLITE SVN001 (PRN193) WAS UNUSABLE ON JDAY 091 (01 APR 2021) BEGINNING 1820 ZULU UNTIL JDAY 092 (02 APR 2021) ENDING 0921 ZULU. 3. POC: - QZSS Services, HTTPS://QZSS.GO.JP/