Shortnote

VelaClock is a dashboard multi-timezone clock for OX. The creators have a deluxe version available for $15. The protection can be easily defeated and turned into a never-ending trial.

The main check that handles the expiration and shows a nag screen can be found in the VTMain_showDialog method. Which we knock out entirely:

                                    meth_VTMain_showDialog_:
00005fb1 55                              push       ebp
00005fb2 89E5                            mov        ebp, esp
00005fb4 57                              push       edi
00005fb5 56                              push       esi
00005fb6 53                              push       ebx
00005fb7 83EC2C                          sub        esp, 0x2c
00005fba E91F020000                      jmp        0x61de
...
000061de 83C42C                          add        esp, 0x2c                             ; XREF=0x60d9, 0x5fba
000061e1 5B                              pop        ebx
000061e2 5E                              pop        esi
000061e3 5F                              pop        edi
000061e4 C9                              leave      
000061e5 C3                              ret        

No other tampering is required, although more could be done to eliminate the purchase buttons. Otherwise, setting the time a few months forward indicates that the widget still runs.