test: Use NodeClockContext in more call sites

diff --git a/src/bench/index_blockfilter.cpp b/src/bench/index_blockfilter.cpp
index 805ad050..a1e85b44 100644
--- a/src/bench/index_blockfilter.cpp
+++ b/src/bench/index_blockfilter.cpp
@@ -16,6 +16,7 @@
 #include <span.h>
 #include <sync.h>
 #include <test/util/setup_common.h>
+#include <test/util/time.h>
 #include <uint256.h>
 #include <util/strencodings.h>
 #include <util/time.h>
@@ -37,9 +38,10 @@ static void BlockFilterIndexSync(benchmark::Bench& bench)
     CPubKey pubkey{"02ed26169896db86ced4cbb7b3ecef9859b5952825adbeab998fb5b307e54949c9"_hex_u8};
     CScript script = GetScriptForDestination(WitnessV0KeyHash(pubkey));
     std::vector<CMutableTransaction> noTxns;
+    NodeClockContext clock_ctx{};
     for (int i = 0; i < CHAIN_SIZE - 100; i++) {
         test_setup->CreateAndProcessBlock(noTxns, script);
-        SetMockTime(GetTime() + 1);
+        clock_ctx += 1s;
     }
     assert(WITH_LOCK(::cs_main, return test_setup->m_node.chainman->ActiveHeight() == CHAIN_SIZE));
 
diff --git a/src/bench/wallet_encrypt.cpp b/src/bench/wallet_encrypt.cpp
index 1f4db614..442e4bf5 100644
--- a/src/bench/wallet_encrypt.cpp
+++ b/src/bench/wallet_encrypt.cpp
@@ -8,6 +8,7 @@
 #include <random.h>
 #include <support/allocators/secure.h>
 #include <test/util/setup_common.h>
+#include <test/util/time.h>
 #include <util/time.h>
 #include <wallet/context.h>
 #include <wallet/test/util.h>
@@ -44,7 +45,7 @@ static void WalletEncrypt(benchmark::Bench& bench, unsigned int key_count)
 
     // Setting a mock time is necessary to force default derive iteration count during
     // wallet encryption.
-    SetMockTime(1);
+    NodeClockContext clock_ctx{1s};
 
     std::unique_ptr<WalletDatabase> database;
     std::shared_ptr<CWallet> wallet;
diff --git a/src/test/addrman_tests.cpp b/src/test/addrman_tests.cpp
index cd1c651a..8ebafb0d 100644
--- a/src/test/addrman_tests.cpp
+++ b/src/test/addrman_tests.cpp
@@ -97,8 +97,7 @@ BOOST_AUTO_TEST_CASE(addrman_simple)
 
 BOOST_AUTO_TEST_CASE(addrman_terrible_many_failures)
 {
-    auto now = Now<NodeSeconds>();
-    SetMockTime(now - (ADDRMAN_MIN_FAIL + 24h));
+    NodeClockContext clock_ctx{};
 
     auto addrman{std::make_unique<AddrMan>(EMPTY_NETGROUPMAN, DETERMINISTIC, GetCheckRatio(m_node))};
 
@@ -109,7 +108,7 @@ BOOST_AUTO_TEST_CASE(addrman_terrible_many_failures)
     BOOST_CHECK(addrman->Add({addr}, source));
     BOOST_CHECK(addrman->Good(addr));
 
-    SetMockTime(now);
+    clock_ctx += ADDRMAN_MIN_FAIL + 24h;
 
     CAddress addr_helper{CAddress(ResolveService("251.252.2.3", 8333), NODE_NONE)};
     addr_helper.nTime = Now<NodeSeconds>();
@@ -132,7 +131,7 @@ BOOST_AUTO_TEST_CASE(addrman_terrible_many_failures)
 
 BOOST_AUTO_TEST_CASE(addrman_penalty_self_announcement)
 {
-    SetMockTime(Now<NodeSeconds>());
+    NodeClockContext clock_ctx{};
     auto addrman = std::make_unique<AddrMan>(EMPTY_NETGROUPMAN, DETERMINISTIC, GetCheckRatio(m_node));
 
     const auto base_time{Now<NodeSeconds>() - 10000s};
diff --git a/src/test/chainstate_write_tests.cpp b/src/test/chainstate_write_tests.cpp
index d0925b61..b7f7afa7 100644
--- a/src/test/chainstate_write_tests.cpp
+++ b/src/test/chainstate_write_tests.cpp
@@ -70,6 +70,7 @@ BOOST_FIXTURE_TEST_CASE(write_during_multiblock_activation, TestChain100Setup)
 
     auto& chainstate{Assert(m_node.chainman)->ActiveChainstate()};
     BlockValidationState state_dummy{};
+    NodeClockContext clock_ctx{};
 
     // Pop two blocks from the tip
     const CBlockIndex* tip{chainstate.m_chain.Tip()};
@@ -88,7 +89,7 @@ BOOST_FIXTURE_TEST_CASE(write_during_multiblock_activation, TestChain100Setup)
     m_node.validation_signals->SyncWithValidationInterfaceQueue();
     // The periodic flush interval is between 50 and 70 minutes (inclusive)
     // The next call to a PERIODIC write will flush
-    SetMockTime(GetMockTime() + DATABASE_WRITE_INTERVAL_MAX);
+    clock_ctx += DATABASE_WRITE_INTERVAL_MAX;
 
     const auto sub{std::make_shared<TestSubscriber>()};
     m_node.validation_signals->RegisterSharedValidationInterface(sub);
diff --git a/src/test/private_broadcast_tests.cpp b/src/test/private_broadcast_tests.cpp
index 048284b2..2e87dc80 100644
--- a/src/test/private_broadcast_tests.cpp
+++ b/src/test/private_broadcast_tests.cpp
@@ -5,6 +5,7 @@
 #include <primitives/transaction.h>
 #include <private_broadcast.h>
 #include <test/util/setup_common.h>
+#include <test/util/time.h>
 #include <util/time.h>
 
 #include <algorithm>
@@ -26,7 +27,7 @@ static CTransactionRef MakeDummyTx(uint32_t id, size_t num_witness)
 
 BOOST_AUTO_TEST_CASE(basic)
 {
-    SetMockTime(Now<NodeSeconds>());
+    NodeClockContext clock_ctx{};
 
     PrivateBroadcast pb;
     const NodeId recipient1{1};
@@ -94,7 +95,7 @@ BOOST_AUTO_TEST_CASE(basic)
     BOOST_CHECK_EQUAL(pb.GetStale().size(), 0);
 
     // 2. Fast-forward the mock clock past the INITIAL_STALE_DURATION.
-    SetMockTime(Now<NodeSeconds>() + PrivateBroadcast::INITIAL_STALE_DURATION + 1min);
+    clock_ctx += PrivateBroadcast::INITIAL_STALE_DURATION + 1min;
 
     // 3. Now that the initial duration has passed, both unconfirmed transactions should be stale.
     BOOST_CHECK_EQUAL(pb.GetStale().size(), 2);
@@ -125,7 +126,7 @@ BOOST_AUTO_TEST_CASE(basic)
     BOOST_CHECK_EQUAL(stale_state.size(), 1);
     BOOST_CHECK_EQUAL(stale_state[0], tx_for_recipient2);
 
-    SetMockTime(Now<NodeSeconds>() + 10h);
+    clock_ctx += 10h;
 
     BOOST_CHECK_EQUAL(pb.GetStale().size(), 2);
 
@@ -141,7 +142,7 @@ BOOST_AUTO_TEST_CASE(basic)
 
 BOOST_AUTO_TEST_CASE(stale_unpicked_tx)
 {
-    SetMockTime(Now<NodeSeconds>());
+    NodeClockContext clock_ctx{};
 
     PrivateBroadcast pb;
     const auto tx{MakeDummyTx(/*id=*/42, /*num_witness=*/0)};
@@ -149,9 +150,9 @@ BOOST_AUTO_TEST_CASE(stale_unpicked_tx)
 
     // Unpicked transactions use the longer INITIAL_STALE_DURATION.
     BOOST_CHECK_EQUAL(pb.GetStale().size(), 0);
-    SetMockTime(Now<NodeSeconds>() + PrivateBroadcast::INITIAL_STALE_DURATION - 1min);
+    clock_ctx += PrivateBroadcast::INITIAL_STALE_DURATION - 1min;
     BOOST_CHECK_EQUAL(pb.GetStale().size(), 0);
-    SetMockTime(Now<NodeSeconds>() + 2min);
+    clock_ctx += 2min;
     const auto stale_state{pb.GetStale()};
     BOOST_REQUIRE_EQUAL(stale_state.size(), 1);
     BOOST_CHECK_EQUAL(stale_state[0], tx);
diff --git a/src/test/rpc_tests.cpp b/src/test/rpc_tests.cpp
index 1b6dbda0..e8a3d992 100644
--- a/src/test/rpc_tests.cpp
+++ b/src/test/rpc_tests.cpp
@@ -11,6 +11,7 @@
 #include <rpc/util.h>
 #include <test/util/common.h>
 #include <test/util/setup_common.h>
+#include <test/util/time.h>
 #include <univalue.h>
 #include <util/time.h>
 
@@ -341,10 +342,9 @@ BOOST_AUTO_TEST_CASE(rpc_ban)
 
     BOOST_CHECK_NO_THROW(CallRPC(std::string("clearbanned")));
 
-    auto now = 10'000s;
-    SetMockTime(now);
+    NodeClockContext clock_ctx{10'000s};
     BOOST_CHECK_NO_THROW(r = CallRPC(std::string("setban 127.0.0.0/24 add 200")));
-    SetMockTime(now += 2s);
+    clock_ctx += 2s;
     const int64_t time_remaining_expected{198};
     BOOST_CHECK_NO_THROW(r = CallRPC(std::string("listbanned")));
     ar = r.get_array();
@@ -355,7 +355,7 @@ BOOST_AUTO_TEST_CASE(rpc_ban)
     const int64_t ban_duration{o1.find_value("ban_duration").getInt<int64_t>()};
     const int64_t time_remaining{o1.find_value("time_remaining").getInt<int64_t>()};
     BOOST_CHECK_EQUAL(adr.get_str(), "127.0.0.0/24");
-    BOOST_CHECK_EQUAL(banned_until, time_remaining_expected + now.count());
+    BOOST_CHECK_EQUAL(banned_until, time_remaining_expected + TicksSinceEpoch<std::chrono::seconds>(NodeClock::now()));
     BOOST_CHECK_EQUAL(ban_duration, banned_until - ban_created);
     BOOST_CHECK_EQUAL(time_remaining, time_remaining_expected);