Please note that the Czech agency GACR acting as the lead agency under the Weave Programme has extended its joint proposal submission deadline to 22 April 2021, hence NCN proposals under the Weave-UNISONO call must be submitted electronically via the ZSUN/OSF submission system, as soon as possible following submission of the joint proposal to GACR as the lead agency, within 7 calendar days and by 29 April 2021 at the latest. »