TITLE: GCN CIRCULAR NUMBER: 29707 SUBJECT: GRB 210324A: Fermi GBM Final Real-time Localization DATE: 21/03/24 11:24:43 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 11:14:28 UT on 24 Mar 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210324A (trigger 638277273.212466 / 210324468). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 148.5, Dec = 37.2 (J2000 degrees, equivalent to J2000 09h 54m, 37d 12'), with a statistical uncertainty of 3.1 degrees. The angle from the Fermi LAT boresight is 76.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210324468/quicklook/glg_skymap_all_bn210324468.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210324468/quicklook/glg_healpix_all_bn210324468.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210324468/quicklook/glg_lc_medres34_bn210324468.gif