Take Calipso, 19:53 he is at O=3 , less than a hour later O=4 and by the end of the evening O=5.
I was probably critical on the SINPO for Calipso, minor fading and slight noise, but definitely much better that my local Oldies station 20kms away

Friday 13th April 2012. All times UTC.
19:50 1675 24222 Albatros Chat ID and Oldies
19:52 1645 34323 Mijnwerker Tentative with the Dutch music
19:53 1629 34323 Calipso Dutch music and the distinctive echo on the microphone
19:54 1620 34323 Sterrekijker Tentative with polka
20:14 1671 24222 Parel Van Twente Chat ID and Oldies
20:18 1665 24222 Matrix Chat ID
20:28 1629 44434 Calipso Station ID and many Oldies
20:31 1620 24322 Sterrekijker Station ID and Oldies
20:38 1645 34323 Mijnwerker Station ID
After a break I was 'back in town' listening to Thin Lizzy - 'The Boys are back in town' - fair signal from Albatros
21:06 1675 34323 Albatros Station ID and Oldies
21:15 1665 24222 Matrix Station ID and Oldies Thanks for mentioning WireUK many times, Not heard the Lips Inc record 'Funky Town' for many years
21:18 1653 21221 Zeewolf Chat ID since Whistle and interference from 1655 was unbearable
21:30 1640 31222 Torpedojager QSO Report for Albatros with serious interference
21:33 1620 43333 Black Power Chat ID at this time, thanks to Powerliner
21:48 1629 55445 Calipso Station with Oldies Better reception than Liverpool Magic 1548, my oldies local.
22:09 1665 34333 Matrix Station ID and an improved signal playing Oldies
22:24 1632 32333 Poema Station ID
22:31 1512 32333 Zwarte Arabier Station ID and SINPO was from my best reception on 1511Khz
22:40 1629 55445 Calipso Station ID with Short report QSO
22:43 1632 34333 Poema Station ID and SINPO after calipso closed Oldies including a Jean Michel Jarre track at this time.
Great to hear Zwarte Arabier on 1512 with a fair signal

Thanks to all stations.