2021 Tide Prediction Calendars Released Format This week, the 2021 tide prediction calendars for 23 locations across the Pacific have been released to 14 national meteorological and weather offices. These annual calendars are a popular product of the Australian-funded Climate and Oceans Support Program in the Pacific (COSPPac) and are designed and produced in the region by the Pacific Community (SPC)’s Geoscience, Energy and Maritime (GEM) Division. From shipping companies and tourism operators, to local fishermen and disaster managers, tide calendars provide critical information for a range of users around the Pacific. For environmental groups, the information is used for various purposes. In Tonga, the team at the Vava’u Environmental Protection Association (VEPA) plans many of its biodiversity surveys using the tide calendar including turtle nesting, coral reef surveys and intertidal gleaning.