That's because Prince William has headed to Kenya for four days. He's expected to return on Sunday.
The future king is taking the mostly private trip to see "first-hand some of the longstanding conservation and anti-poaching initiatives" supported by the Tusk Trust, of which he is a patron, his office confirms to PEOPLE.
He's also thought to be heading to the wedding of old friend and former flame, Jessica "Jecca" Craig.
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Craig is marrying conservationist Jonathan Baillie on Saturday.
William went to her brother Batian's wedding in 2008 – missing his cousin Peter Phillips' wedding at Windsor in the process.
When William was on his gap year before university he was romantically linked with Craig and reported to have had a "pretend engagement" with her.
The prince was staying in the Craig family's safari reserve when he made a real proposal – asking the then Kate Middleton to marry him in 2010.
Although he'll miss Easter morning, William already prioritized family bonding time earlier this month, joining Princess Kate and the kids for a ski vacation in the French Alps.
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For his Africa trip, William will join those working to fit radio-tracking collars to elephants to help with research and conservation efforts. He is also set to spend time with a team of rangers in Lewa Conservancy, to learn about their work protecting the local rhino populations from poaching.
William, 33, recently spoke of how he envisions his children one day continuing his conservation efforts, and of George working in the field "in his bangles and his sandals."
Conservation efforts are already a family affair. William's brother, Prince Harry, spent much of last summer working in a similar mission in southern Africa.
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William's latest visit kicks off with a meeting with Kenyan President Uhuru Kenyatta. The U.K. government's Foreign Office asked that he make the stop, and they will discuss a range of topics including defense, security, and conservation.
No doubt William, who is president of United For Wildlife, will want to talk about the declaration made by transport companies and other businesses to clamp down on the smuggling of illegal wildlife parts, which was signed at Buckingham Palace earlier this month.