TITLE: GCN CIRCULAR NUMBER: 30836 SUBJECT: GECAM observations of bursts from SGR J1935+2154 (2021-09-12T05 to 2021-09-13T01) DATE: 21/09/13 15:03:09 GMT FROM: Ce Cai at IHEP C. Cai, S. L. Xiong, Y. Huang, W. C. Xue, Z. W. Guo, C. Y. Li, X. B. Li, J. C. Liu, X. Y. Song, C. W. Wang, P. Wang, S. L. Xie, S. Xiao, Q. B. Yi, Y. Q. Zhang, G. Y. Zhao, X. Y. Zhao, Yi Zhao, C. Zheng, W. Chen, Y. Q. Du, D. Y. Guo, J. J. He, J. Liang, F. J. Lu, Q. Luo, X. Ma, W. X. Peng, R. Qiao, L. M. Song, J. Wang, H. Wu, P. Zhang, S. N. Zhang, X. L. Zhang, Z. Zhang, S. J. Zheng (IHEP), report on behalf of GECAM team: GECAM-B detected a series of bursts very probably from SGR J1935+2154, either by in-flight trigger or by on-ground search of the data, from 2021-09-12T05 to 2021-09-13T01. Here is the list of these bursts: Trigger Time (UTC) 2021-09-12T05:44:17.050 2021-09-12T16:26:08.150 2021-09-12T16:52:07.950 2021-09-12T22:16:36.200 2021-09-13T00:27:25.200 Locations of all these bursts are consistent with SGR J1935+2154. Please note that all GECAM results here are preliminary.