diff --git a/std/os/uefi/tables.zig b/std/os/uefi/tables.zig
index 51caed19d175c832962c095c9d1b78a6c91522a0..901591dea4ef0c4e2274c2d668a95e7b3d53f1cf 100644
--- a/std/os/uefi/tables.zig
+++ b/std/os/uefi/tables.zig
@@ -1,5 +1,6 @@
 pub const BootServices = @import("tables/boot_services.zig").BootServices;
 pub const ConfigurationTable = @import("tables/configuration_table.zig").ConfigurationTable;
+pub const global_variable align(8) = @import("tables/runtime_services.zig").global_variable;
 pub const ResetType = @import("tables/runtime_services.zig").ResetType;
 pub const RuntimeServices = @import("tables/runtime_services.zig").RuntimeServices;
 pub const SystemTable = @import("tables/system_table.zig").SystemTable;
diff --git a/std/os/uefi/tables/runtime_services.zig b/std/os/uefi/tables/runtime_services.zig
index bae808ac85fcda63a3e9b88fb07a7e6bc3617cc1..53cb17db501628a4fe8a6f71aa3182d8ed080395 100644
--- a/std/os/uefi/tables/runtime_services.zig
+++ b/std/os/uefi/tables/runtime_services.zig
@@ -39,3 +39,13 @@ pub const ResetType = extern enum(u32) {
     ResetShutdown,
     ResetPlatformSpecific,
 };
+
+/// UEFI Specification, Version 2.8, 3.3
+pub const global_variable align(8) = Guid{
+    .time_low = 0x8be4df61,
+    .time_mid = 0x93ca,
+    .time_high_and_version = 0x11d2,
+    .clock_seq_high_and_reserved = 0xaa,
+    .clock_seq_low = 0x0d,
+    .node = [_]u8{ 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c },
+};