BANGKOK – An afternoon downpour did not deter tens of thousands of black-clad Thais from converging on the Grand Palace and Temple of the Emerald Buddha on Sunday as they continued to mourn the loss of their late king, Bhumibol Adulyadej. They could have a long time to grieve before Bhumibol’s eldest son and heir, 64-year-old Crown Prince Maha Vajiralongkorn, becomes king. In a surprise announcement, Vajiralongkorn said he will remain as crown prince until he has had time to mourn. Just how long that will take is not clear. But it could be as long as a year before Bhumibol is cremated, and there has been speculation that his son will wait until then to take the throne.